--- DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '21714' abstract: - lang: eng text: Be stars are rapidly rotating main-sequence stars that play a crucial role in understanding stellar evolution and binary interactions. In this Letter, we propose a new formation scenario for black hole (BH) + Be star binaries (hereafter BHBe binaries), where the Be star is produced through the wind Roche lobe overflow (WRLOF) mechanism. Our analysis is based on numerical simulations of the WRLOF process in massive binaries, building on recent theoretical work. We demonstrate that the WRLOF model can efficiently form BHBe binaries under reasonable assumptions on stellar wind velocities. Using rapid binary population synthesis, we estimate the population of such systems in the Milky Way, predicting ∼1800−3200 currently existing BHBe binaries originating from the WRLOF channel. These systems are characterized by high eccentricities and exceptionally wide orbits, with typical orbital periods exceeding 1000 days and a peak distribution around ∼10,000 days. Due to their long orbital separations, these BHBe binaries are promising targets for future detection via astrometric and interferometric observations. acknowledgement: We are deeply grateful to the anonymous referee for the insightful comments, which have significantly improved the quality of this work. The authors express their gratitude to Zhaoyu Zuo and I. El Mellah for sharing the grids of wind accretion efficiencies. Z.L. thanks Matthias U. Kruckow for detailed discussions about the BH formation. This work is supported by the Natural Science Foundation of China (grant Nos. 12125303, 12525304, 12288102, 12090040/3, 12473034, 12503044, 12333008, 12433009, 12422305, 12273105, 12073070, 12173081), the Strategic Priority Research Program of the Chinese Academy of Sciences (grant Nos. XDB1160303, XDB1160201, XDB1160000), the National Key R&D Program of China (grant Nos. 2021YFA1600403 and 2021YFA1600400), the CAS “Light of West China,” the Yunnan Revitalization Talent Support Program-Science & Technology Champion Project (No. 202305AB350003) and Young Talent project, the International Centre of Supernovae (ICESUN), Yunnan Key Laboratory of Supernova Research (Nos. 202302AN360001 and 202201BC070003), Yunnan Fundamental Research Projects (No. 202401AT070139), and the Natural Science Foundation of Henan Province (No. 242300420944). X.C. acknowledges the New Cornerstone Science Foundation through the XPLORER PRIZE. The authors gratefully acknowledge the “PHOENIX Supercomputing Platform” jointly operated by the Binary Population Synthesis Group and the Stellar Astrophysics Group at Yunnan Observatories, Chinese Academy of Sciences. article_number: L42 article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Zhenwei full_name: Li, Zhenwei last_name: Li - first_name: Shi full_name: Jia, Shi last_name: Jia - first_name: Dandan full_name: Wei, Dandan id: 5dd129bd-0601-11ef-b325-833284687b76 last_name: Wei - first_name: Hongwei full_name: Ge, Hongwei last_name: Ge - first_name: Hailiang full_name: Chen, Hailiang last_name: Chen - first_name: Yangyang full_name: Zhang, Yangyang last_name: Zhang - first_name: Xuefei full_name: Chen, Xuefei last_name: Chen - first_name: Zhanwen full_name: Han, Zhanwen last_name: Han citation: ama: 'Li Z, Jia S, Wei D, et al. Formation of Be stars via wind accretion: Case study on Black Hole + Be star binaries. The Astrophysical Journal Letters. 2026;996(2). doi:10.3847/2041-8213/ae3008' apa: 'Li, Z., Jia, S., Wei, D., Ge, H., Chen, H., Zhang, Y., … Han, Z. (2026). Formation of Be stars via wind accretion: Case study on Black Hole + Be star binaries. The Astrophysical Journal Letters. IOP Publishing. https://doi.org/10.3847/2041-8213/ae3008' chicago: 'Li, Zhenwei, Shi Jia, Dandan Wei, Hongwei Ge, Hailiang Chen, Yangyang Zhang, Xuefei Chen, and Zhanwen Han. “Formation of Be Stars via Wind Accretion: Case Study on Black Hole + Be Star Binaries.” The Astrophysical Journal Letters. IOP Publishing, 2026. https://doi.org/10.3847/2041-8213/ae3008.' ieee: 'Z. Li et al., “Formation of Be stars via wind accretion: Case study on Black Hole + Be star binaries,” The Astrophysical Journal Letters, vol. 996, no. 2. IOP Publishing, 2026.' ista: 'Li Z, Jia S, Wei D, Ge H, Chen H, Zhang Y, Chen X, Han Z. 2026. Formation of Be stars via wind accretion: Case study on Black Hole + Be star binaries. The Astrophysical Journal Letters. 996(2), L42.' mla: 'Li, Zhenwei, et al. “Formation of Be Stars via Wind Accretion: Case Study on Black Hole + Be Star Binaries.” The Astrophysical Journal Letters, vol. 996, no. 2, L42, IOP Publishing, 2026, doi:10.3847/2041-8213/ae3008.' short: Z. Li, S. Jia, D. Wei, H. Ge, H. Chen, Y. Zhang, X. Chen, Z. Han, The Astrophysical Journal Letters 996 (2026). date_created: 2026-04-12T22:01:50Z date_published: 2026-01-10T00:00:00Z date_updated: 2026-04-16T06:26:18Z day: '10' ddc: - '520' department: - _id: YlGo doi: 10.3847/2041-8213/ae3008 external_id: arxiv: - '2512.18565' file: - access_level: open_access checksum: 09200c1cf405101abdd298ce80c9a90d content_type: application/pdf creator: dernst date_created: 2026-04-16T06:24:30Z date_updated: 2026-04-16T06:24:30Z file_id: '21741' file_name: 2026_AstrophysicalJourLetters_Li.pdf file_size: 5202345 relation: main_file success: 1 file_date_updated: 2026-04-16T06:24:30Z has_accepted_license: '1' intvolume: ' 996' issue: '2' language: - iso: eng month: '01' oa: 1 oa_version: Published Version publication: The Astrophysical Journal Letters publication_identifier: eissn: - 2041-8213 issn: - 2041-8205 publication_status: published publisher: IOP Publishing quality_controlled: '1' scopus_import: '1' status: public title: 'Formation of Be stars via wind accretion: Case study on Black Hole + Be star binaries' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 996 year: '2026' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '21715' abstract: - lang: eng text: New populations of red active galactic nuclei (known as “little red dots”) discovered by JWST exhibit remarkable spectral energy distributions. Leveraging X-ray through far-infrared observations of two of the most luminous known little red dots, we directly measure their bolometric luminosities. We find evidence that more than half of the bolometric luminosity likely emerges in the rest-frame optical, with Lbol/L5100 = 5, roughly half the value for “standard” active galactic nuclei. Meanwhile, the X-ray emitting corona, UV-emitting blackbody, and reprocessed mid to far-infrared emission are all considerably subdominant, assuming that the far-infrared luminosity is well below current measured limits. We present new bolometric corrections that dramatically lower inferred bolometric luminosities by a factor of 10 compared to published values in the literature. These bolometric corrections are in accord with expectations from models in which gas absorption and reprocessing are responsible for the red rest-frame optical colors of little red dots. We discuss how this lowered luminosity scale suggests a lower mass scale for the population by at least an order of magnitude (e.g., ∼105–107 M⊙ black holes, and ∼108 M⊙ galaxies), alleviating tensions with clustering, overmassive black holes, and the integrated black hole mass density in the Universe. acknowledgement: "We benefit from the following JWST programs: UNCOVER (JWST/GO #2561; Labbé & Bezanson); ALT (JWST-GO #3516; Naidu & Matthee); MegaScience (JWST-GO #4111; Suess); RUBIES (JWST-GO #4233; de Graaff & Brammer); PRIMER (JWST/GO #1837; Dunlop).\r\n\r\nWe acknowledge funding from NSF/AAG #2306950, JWST-GO-02561, JWST-GO-03516, and JWST-GO-04111, provided through a grant from the STScI under NASA contract NAS5-03127. I.L. acknowledges support from Australian Research Council Future Fellowship FT220100798. K.G. and T.N. acknowledge support from Australian Research Council Laureate Fellowship FL180100060. A.Z. acknowledges support by grant No. 2020750 from the United States-Israel Binational Science Foundation (BSF) and grant No. 2109066 from the United States National Science Foundation (NSF); by the Ministry of Science & Technology, Israel; and by the Israel Science Foundation grant No. 864/23. J.M. and I.K. are funded by the European Union (ERC, AGENTS, 101076224). Views and opinions expressed are, however, those of the author(s) only and do not necessarily reflect those of the European Union or the European Research Council. Neither the European Union nor the granting authority can be held responsible for them. Y.F. acknowledges support from JSPS KAKENHI grant No. JSPS KAKENHI grant Nos. JP22K21349 and JP23K13149. This work has received funding from the Swiss State Secretariat for Education, Research and Innovation (SERI) under contract No. MB22.00072, as well as from the Swiss National Science Foundation (SNSF) through project grant 200020_207349. The Cosmic Dawn Center (DAWN) is funded by the Danish National Research Foundation under grant DNRF140. Support for this work for RPN was provided by NASA through the NASA Hubble Fellowship grant HST-HF2-51515.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555. The work of CCW is supported by NOIRLab, which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. J.M. acknowledges funding by the European Union (ERC, AGENTS, 101076224). R.E.H. acknowledges support by the German Aerospace Center (DLR) and the Federal Ministry for Economic Affairs and Energy (BMWi) through program 50OR2403 “RUBIES.”" article_number: '129' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Jenny E. full_name: Greene, Jenny E. last_name: Greene - first_name: David J. full_name: Setton, David J. last_name: Setton - first_name: Lukas J. full_name: Furtak, Lukas J. last_name: Furtak - first_name: Rohan P. full_name: Naidu, Rohan P. last_name: Naidu - first_name: Marta full_name: Volonteri, Marta last_name: Volonteri - first_name: Pratika full_name: Dayal, Pratika last_name: Dayal - first_name: Ivo full_name: Labbe, Ivo last_name: Labbe - first_name: Pieter full_name: Van Dokkum, Pieter last_name: Van Dokkum - first_name: Rachel full_name: Bezanson, Rachel last_name: Bezanson - first_name: Gabriel full_name: Brammer, Gabriel last_name: Brammer - first_name: Sam E. full_name: Cutler, Sam E. last_name: Cutler - first_name: Karl full_name: Glazebrook, Karl last_name: Glazebrook - first_name: Anna full_name: De Graaff, Anna last_name: De Graaff - first_name: Michaela full_name: Hirschmann, Michaela last_name: Hirschmann - first_name: Raphael E. full_name: Hviding, Raphael E. last_name: Hviding - first_name: Vasily full_name: Kokorev, Vasily last_name: Kokorev - first_name: Joel full_name: Leja, Joel last_name: Leja - first_name: Hanpu full_name: Liu, Hanpu last_name: Liu - first_name: Yilun full_name: Ma, Yilun last_name: Ma - first_name: Jorryt J full_name: Matthee, Jorryt J id: 7439a258-f3c0-11ec-9501-9df22fe06720 last_name: Matthee orcid: 0000-0003-2871-127X - first_name: Themiya full_name: Nanayakkara, Themiya last_name: Nanayakkara - first_name: Pascal A. full_name: Oesch, Pascal A. last_name: Oesch - first_name: Richard full_name: Pan, Richard last_name: Pan - first_name: Sedona H. full_name: Price, Sedona H. last_name: Price - first_name: Justin S. full_name: Spilker, Justin S. last_name: Spilker - first_name: Bingjie full_name: Wang, Bingjie last_name: Wang - first_name: John R. full_name: Weaver, John R. last_name: Weaver - first_name: Katherine E. full_name: Whitaker, Katherine E. last_name: Whitaker - first_name: Christina C. full_name: Williams, Christina C. last_name: Williams - first_name: Adi full_name: Zitrin, Adi last_name: Zitrin citation: ama: 'Greene JE, Setton DJ, Furtak LJ, et al. What you see is what you get: Empirically measured bolometric luminosities of Little Red Dots. The Astrophysical Journal. 2026;996(2). doi:10.3847/1538-4357/ae1836' apa: 'Greene, J. E., Setton, D. J., Furtak, L. J., Naidu, R. P., Volonteri, M., Dayal, P., … Zitrin, A. (2026). What you see is what you get: Empirically measured bolometric luminosities of Little Red Dots. The Astrophysical Journal. IOP Publishing. https://doi.org/10.3847/1538-4357/ae1836' chicago: 'Greene, Jenny E., David J. Setton, Lukas J. Furtak, Rohan P. Naidu, Marta Volonteri, Pratika Dayal, Ivo Labbe, et al. “What You See Is What You Get: Empirically Measured Bolometric Luminosities of Little Red Dots.” The Astrophysical Journal. IOP Publishing, 2026. https://doi.org/10.3847/1538-4357/ae1836.' ieee: 'J. E. Greene et al., “What you see is what you get: Empirically measured bolometric luminosities of Little Red Dots,” The Astrophysical Journal, vol. 996, no. 2. IOP Publishing, 2026.' ista: 'Greene JE, Setton DJ, Furtak LJ, Naidu RP, Volonteri M, Dayal P, Labbe I, Van Dokkum P, Bezanson R, Brammer G, Cutler SE, Glazebrook K, De Graaff A, Hirschmann M, Hviding RE, Kokorev V, Leja J, Liu H, Ma Y, Matthee JJ, Nanayakkara T, Oesch PA, Pan R, Price SH, Spilker JS, Wang B, Weaver JR, Whitaker KE, Williams CC, Zitrin A. 2026. What you see is what you get: Empirically measured bolometric luminosities of Little Red Dots. The Astrophysical Journal. 996(2), 129.' mla: 'Greene, Jenny E., et al. “What You See Is What You Get: Empirically Measured Bolometric Luminosities of Little Red Dots.” The Astrophysical Journal, vol. 996, no. 2, 129, IOP Publishing, 2026, doi:10.3847/1538-4357/ae1836.' short: J.E. Greene, D.J. Setton, L.J. Furtak, R.P. Naidu, M. Volonteri, P. Dayal, I. Labbe, P. Van Dokkum, R. Bezanson, G. Brammer, S.E. Cutler, K. Glazebrook, A. De Graaff, M. Hirschmann, R.E. Hviding, V. Kokorev, J. Leja, H. Liu, Y. Ma, J.J. Matthee, T. Nanayakkara, P.A. Oesch, R. Pan, S.H. Price, J.S. Spilker, B. Wang, J.R. Weaver, K.E. Whitaker, C.C. Williams, A. Zitrin, The Astrophysical Journal 996 (2026). date_created: 2026-04-12T22:01:50Z date_published: 2026-01-10T00:00:00Z date_updated: 2026-05-04T11:20:42Z day: '10' ddc: - '520' department: - _id: JoMa doi: 10.3847/1538-4357/ae1836 external_id: arxiv: - '2509.05434' file: - access_level: open_access checksum: 7b3cb025d4bcaa35c6e52bd0c8fb6cf4 content_type: application/pdf creator: dernst date_created: 2026-05-04T11:19:48Z date_updated: 2026-05-04T11:19:48Z file_id: '21792' file_name: 2026_AstrophysicalJour_Greene.pdf file_size: 684400 relation: main_file success: 1 file_date_updated: 2026-05-04T11:19:48Z has_accepted_license: '1' intvolume: ' 996' issue: '2' language: - iso: eng month: '01' oa: 1 oa_version: Published Version project: - _id: bd9b2118-d553-11ed-ba76-db24564edfea grant_number: '101076224' name: Young galaxies as tracers and agents of cosmic reionization publication: The Astrophysical Journal publication_identifier: eissn: - 1538-4357 issn: - 0004-637X publication_status: published publisher: IOP Publishing quality_controlled: '1' scopus_import: '1' status: public title: 'What you see is what you get: Empirically measured bolometric luminosities of Little Red Dots' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 996 year: '2026' ... --- OA_place: repository OA_type: green _id: '21717' abstract: - lang: eng text: Robust Markov Decision Processes (RMDPs) generalize classical MDPs that consider uncertainties in transition probabilities by defining a set of possible transition functions. An objective is a set of runs (or infinite trajectories) of the RMDP, and the value for an objective is the maximal probability that the agent can guarantee against the adversarial environment. We consider (a) reachability objectives, where given a target set of states, the goal is to eventually arrive at one of them; and (b) parity objectives, which are a canonical representation for ω-regular objectives. The qualitative analysis problem asks whether the objective can be ensured with probability 1. In this work, we study the qualitative problem for reachability and parity objectives on RMDPs without making any assumption over the structures of the RMDPs, e.g., unichain or aperiodic. Our contributions are twofold. We first present efficient algorithms with oracle access to uncertainty sets that solve qualitative problems of reachability and parity objectives. We then report experimental results demonstrating the effectiveness of our oracle-based approach on classical RMDP examples from the literature scaling up to thousands of states. acknowledgement: This work was supported by ERC CoG 863818 (ForMSMArt) and Austrian Science Fund (FWF) 10.55776/COE12. We also thank Hossein Zakerinia for his helpful feedback. article_processing_charge: No arxiv: 1 author: - first_name: Ali full_name: Asadi, Ali id: 02d96aae-000e-11ec-b801-cadd0a5eefbb last_name: Asadi - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Ehsan full_name: Kafshdar Goharshadi, Ehsan id: 103b4fa0-896a-11ed-bdf8-87b697bef40d last_name: Kafshdar Goharshadi orcid: 0000-0002-8595-0587 - first_name: Mehrdad full_name: Karrabi, Mehrdad id: 67638922-f394-11eb-9cf6-f20423e08757 last_name: Karrabi orcid: 0009-0007-5253-9170 - first_name: Ali full_name: Shafiee, Ali id: 2783031a-7378-11f0-b2d0-f17f1db2ebad last_name: Shafiee citation: ama: 'Asadi A, Chatterjee K, Goharshady E, Karrabi M, Shafiee A. Qualitative analysis of ω-regular objectives on robust MDPs. In: Proceedings of the 40th AAAI Conference on Artificial Intelligence. Vol 40. Association for the Advancement of Artificial Intelligence; 2026:36137-36145. doi:10.1609/aaai.v40i43.40931' apa: 'Asadi, A., Chatterjee, K., Goharshady, E., Karrabi, M., & Shafiee, A. (2026). Qualitative analysis of ω-regular objectives on robust MDPs. In Proceedings of the 40th AAAI Conference on Artificial Intelligence (Vol. 40, pp. 36137–36145). Singapore, Singapore: Association for the Advancement of Artificial Intelligence. https://doi.org/10.1609/aaai.v40i43.40931' chicago: Asadi, Ali, Krishnendu Chatterjee, Ehsan Goharshady, Mehrdad Karrabi, and Ali Shafiee. “Qualitative Analysis of ω-Regular Objectives on Robust MDPs.” In Proceedings of the 40th AAAI Conference on Artificial Intelligence, 40:36137–45. Association for the Advancement of Artificial Intelligence, 2026. https://doi.org/10.1609/aaai.v40i43.40931. ieee: A. Asadi, K. Chatterjee, E. Goharshady, M. Karrabi, and A. Shafiee, “Qualitative analysis of ω-regular objectives on robust MDPs,” in Proceedings of the 40th AAAI Conference on Artificial Intelligence, Singapore, Singapore, 2026, vol. 40, no. 43, pp. 36137–36145. ista: 'Asadi A, Chatterjee K, Goharshady E, Karrabi M, Shafiee A. 2026. Qualitative analysis of ω-regular objectives on robust MDPs. Proceedings of the 40th AAAI Conference on Artificial Intelligence. AAAI: Conference on Artificial Intelligence vol. 40, 36137–36145.' mla: Asadi, Ali, et al. “Qualitative Analysis of ω-Regular Objectives on Robust MDPs.” Proceedings of the 40th AAAI Conference on Artificial Intelligence, vol. 40, no. 43, Association for the Advancement of Artificial Intelligence, 2026, pp. 36137–45, doi:10.1609/aaai.v40i43.40931. short: A. Asadi, K. Chatterjee, E. Goharshady, M. Karrabi, A. Shafiee, in:, Proceedings of the 40th AAAI Conference on Artificial Intelligence, Association for the Advancement of Artificial Intelligence, 2026, pp. 36137–36145. conference: end_date: 2026-01-27 location: Singapore, Singapore name: 'AAAI: Conference on Artificial Intelligence' start_date: 2026-01-20 date_created: 2026-04-12T22:01:50Z date_published: 2026-03-14T00:00:00Z date_updated: 2026-05-04T11:38:56Z day: '14' department: - _id: KrCh - _id: GradSch doi: 10.1609/aaai.v40i43.40931 ec_funded: 1 external_id: arxiv: - '2505.04539' intvolume: ' 40' issue: '43' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2505.04539 month: '03' oa: 1 oa_version: Preprint page: 36137-36145 project: - _id: 0599E47C-7A3F-11EA-A408-12923DDC885E call_identifier: H2020 grant_number: '863818' name: 'Formal Methods for Stochastic Models: Algorithms and Applications' publication: Proceedings of the 40th AAAI Conference on Artificial Intelligence publication_identifier: eissn: - 2374-3468 issn: - 2159-5399 publication_status: published publisher: Association for the Advancement of Artificial Intelligence quality_controlled: '1' scopus_import: '1' status: public title: Qualitative analysis of ω-regular objectives on robust MDPs type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 40 year: '2026' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: diamond _id: '21718' abstract: - lang: eng text: "In this paper, we consider the big algebra recently introduced by Hausel for the GLn-action on the coordinate ring of the matrix space Mat(n,r). In particular, we obtain explicit formulas for the big algebra generators in terms of differential operators with polynomial coefficients. We show that big algebras in type A are commutative and relate them to the Bethe subalgebra in the Yangian Y(gln). We apply these results to big algebras of symmetric powers of the standard representation of GLn.\r\n." acknowledgement: "I would like to express my gratitude to Tam´as Hausel for introducing me to the subject and\r\nfor his constant guidance throughout this work. I would also like to thank Tam´as Hausel,\r\nMischa Elkner, Jakub L¨owit, Anton Mellit, Marino Romero, Leonid Rybnikov for many fruitful\r\ndiscussions and feedback on earlier drafts of this paper. We are grateful to the anonymous\r\nreferees for many useful comments and suggestions that improved the manuscript. This work was done during the author’s PhD studies at the Institute of Science and Technology Austria (ISTA). The author was supported by the Austrian Science Fund (FWF) grant\r\n“Geometry of the tip of the global nilpotent cone” no. 10.55776/P35847 and the DOC Fellowship of the Austrian Academy of Sciences. The author also acknowledges the long-term program\r\nof support of the Ukrainian research teams at the Polish Academy of Sciences carried out in\r\ncollaboration with the U.S. National Academy of Sciences with the financial support of external\r\npartners. For open access purposes, the author has applied a CC BY public copyright license\r\nto any author-accepted manuscript version arising from this submission." article_number: '024' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Nhok T full_name: Ngo, Nhok T id: 28e53c8c-896a-11ed-bdf8-f809043ce2f0 last_name: Ngo citation: ama: 'Ngo NT. Big algebra in type A for the coordinate ring of the matrix space. Symmetry, Integrability and Geometry: Methods and Applications. 2026;22. doi:10.3842/SIGMA.2026.024' apa: 'Ngo, N. T. (2026). Big algebra in type A for the coordinate ring of the matrix space. Symmetry, Integrability and Geometry: Methods and Applications. National Academy of Science of Ukraine. https://doi.org/10.3842/SIGMA.2026.024' chicago: 'Ngo, Nhok T. “Big Algebra in Type A for the Coordinate Ring of the Matrix Space.” Symmetry, Integrability and Geometry: Methods and Applications. National Academy of Science of Ukraine, 2026. https://doi.org/10.3842/SIGMA.2026.024.' ieee: 'N. T. Ngo, “Big algebra in type A for the coordinate ring of the matrix space,” Symmetry, Integrability and Geometry: Methods and Applications, vol. 22. National Academy of Science of Ukraine, 2026.' ista: 'Ngo NT. 2026. Big algebra in type A for the coordinate ring of the matrix space. Symmetry, Integrability and Geometry: Methods and Applications. 22, 024.' mla: 'Ngo, Nhok T. “Big Algebra in Type A for the Coordinate Ring of the Matrix Space.” Symmetry, Integrability and Geometry: Methods and Applications, vol. 22, 024, National Academy of Science of Ukraine, 2026, doi:10.3842/SIGMA.2026.024.' short: 'N.T. Ngo, Symmetry, Integrability and Geometry: Methods and Applications 22 (2026).' corr_author: '1' date_created: 2026-04-12T22:01:51Z date_published: 2026-03-14T00:00:00Z date_updated: 2026-04-16T06:11:12Z day: '14' ddc: - '510' department: - _id: TaHa doi: 10.3842/SIGMA.2026.024 external_id: arxiv: - '2501.04605' file: - access_level: open_access checksum: 29b28b5f8717ed1a084a2b551d0fd284 content_type: application/pdf creator: dernst date_created: 2026-04-16T06:06:54Z date_updated: 2026-04-16T06:06:54Z file_id: '21740' file_name: 2026_SIGMA_Ngo.pdf file_size: 975460 relation: main_file success: 1 file_date_updated: 2026-04-16T06:06:54Z has_accepted_license: '1' intvolume: ' 22' language: - iso: eng month: '03' oa: 1 oa_version: Published Version project: - _id: 34b2c9cb-11ca-11ed-8bc3-a50ba74ca4a3 grant_number: P35847 name: Geometry of the tip of the global nilpotent cone - _id: e6c64f42-ab3c-11f0-94c7-a95658059ccc grant_number: '27483' name: Big algebras in classical types publication: 'Symmetry, Integrability and Geometry: Methods and Applications' publication_identifier: eissn: - 1815-0659 publication_status: published publisher: National Academy of Science of Ukraine quality_controlled: '1' scopus_import: '1' status: public title: Big algebra in type A for the coordinate ring of the matrix space tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 22 year: '2026' ... --- OA_place: repository OA_type: green _id: '21719' abstract: - lang: eng text: "We develop a new algorithmic framework for designing approximation algorithms for cut-based optimization problems on capacitated undirected graphs that undergo edge insertions and deletions. Specifically, our framework dynamically maintains a variant of the hierarchical \U0001D457-tree decomposition of [Madry FOCS’10], achieving a poly-logarithmic approximation factor to the graph’s cut structure and supporting edge updates in \U0001D442⁡(\U0001D45B\U0001D700) amortized update time, for any arbitrarily small constant \U0001D700 ∈(0,1).\r\nConsequently, we obtain new trade-offs between approximation and update/query time for fundamental cut-based optimization problems in the fully dynamic setting, including all-pairs minimum cuts, sparsest cut, multi-way cut, and multi-cut. For the last three problems, these trade-offs give the first fully-dynamic algorithms achieving poly-logarithmic approximation in sub-linear time per operation.\r\nThe main technical ingredient behind our dynamic hierarchy is a dynamic cut-sparsifier algorithm that can handle vertex splits with low recourse. This is achieved by white-boxing the dynamic cut sparsifier construction of [Abraham et al. FOCS’16], based on forest packing, together with new structural insights about the maintenance of these forests under vertex splits. Given the versatility of cut sparsification in both the static and dynamic graph algorithms literature, we believe this construction may be of independent interest." acknowledgement: "Monika Henzinger: Funded by the European union. Views and opinions expressed\r\nare however those of the author(s) only and do not necessarily reflect those of the European Union or the European Research Council Executive Agency. Neither the European Union nor the granting authority can be held responsible for them. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (MoDynStruct, No. 101019564) and the Austrian Science Fund (FWF) grant DOI 10.55776/I5982. For open access purposes, the author has applied a CC BY public copyright license to any author accepted manuscript version arising from this submission.\r\nPeter Kiss: This research was funded in whole or in part by the Austrian Science Fund (FWF)\r\n10.55776/ESP6088024." article_processing_charge: No arxiv: 1 author: - first_name: Gramoz full_name: Goranci, Gramoz last_name: Goranci - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Peter full_name: Kiss, Peter last_name: Kiss - first_name: Ali full_name: Momeni, Ali last_name: Momeni - first_name: Gernot full_name: Zöcklein, Gernot id: 45d5e826-47af-11f1-84e5-ba87c23fe681 last_name: Zöcklein citation: ama: 'Goranci G, Henzinger M, Kiss P, Momeni A, Zöcklein G. Dynamic hierarchical j-tree decomposition and its applications. In: Proceedings of the 2026 Annual ACM SIAM Symposium on Discrete Algorithms. Vol 2026-January. Society for Industrial and Applied Mathematics; 2026:1128-1180. doi:10.1137/1.9781611978971.45' apa: Goranci, G., Henzinger, M., Kiss, P., Momeni, A., & Zöcklein, G. (2026). Dynamic hierarchical j-tree decomposition and its applications. In Proceedings of the 2026 Annual ACM SIAM Symposium on Discrete Algorithms (Vol. 2026–January, pp. 1128–1180). Society for Industrial and Applied Mathematics. https://doi.org/10.1137/1.9781611978971.45 chicago: Goranci, Gramoz, Monika Henzinger, Peter Kiss, Ali Momeni, and Gernot Zöcklein. “Dynamic Hierarchical J-Tree Decomposition and Its Applications.” In Proceedings of the 2026 Annual ACM SIAM Symposium on Discrete Algorithms, 2026–January:1128–80. Society for Industrial and Applied Mathematics, 2026. https://doi.org/10.1137/1.9781611978971.45. ieee: G. Goranci, M. Henzinger, P. Kiss, A. Momeni, and G. Zöcklein, “Dynamic hierarchical j-tree decomposition and its applications,” in Proceedings of the 2026 Annual ACM SIAM Symposium on Discrete Algorithms, 2026, vol. 2026–January, pp. 1128–1180. ista: 'Goranci G, Henzinger M, Kiss P, Momeni A, Zöcklein G. 2026. Dynamic hierarchical j-tree decomposition and its applications. Proceedings of the 2026 Annual ACM SIAM Symposium on Discrete Algorithms. SODA: Symposium on Discrete Algorithms vol. 2026–January, 1128–1180.' mla: Goranci, Gramoz, et al. “Dynamic Hierarchical J-Tree Decomposition and Its Applications.” Proceedings of the 2026 Annual ACM SIAM Symposium on Discrete Algorithms, vol. 2026–January, Society for Industrial and Applied Mathematics, 2026, pp. 1128–80, doi:10.1137/1.9781611978971.45. short: G. Goranci, M. Henzinger, P. Kiss, A. Momeni, G. Zöcklein, in:, Proceedings of the 2026 Annual ACM SIAM Symposium on Discrete Algorithms, Society for Industrial and Applied Mathematics, 2026, pp. 1128–1180. conference: name: 'SODA: Symposium on Discrete Algorithms' date_created: 2026-04-12T22:01:51Z date_published: 2026-01-07T00:00:00Z date_updated: 2026-05-04T11:54:09Z day: '07' department: - _id: MoHe doi: 10.1137/1.9781611978971.45 ec_funded: 1 external_id: arxiv: - '2601.09139' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2601.09139 month: '01' oa: 1 oa_version: Preprint page: 1128-1180 project: - _id: bd9ca328-d553-11ed-ba76-dc4f890cfe62 call_identifier: H2020 grant_number: '101019564' name: The design and evaluation of modern fully dynamic data structures - _id: bda196b2-d553-11ed-ba76-8e8ee6c21103 grant_number: I05982 name: Static and Dynamic Hierarchical Graph Decompositions publication: Proceedings of the 2026 Annual ACM SIAM Symposium on Discrete Algorithms publication_identifier: eissn: - '15579468' isbn: - '9781611978971' issn: - '10719040' publication_status: published publisher: Society for Industrial and Applied Mathematics quality_controlled: '1' scopus_import: '1' status: public title: Dynamic hierarchical j-tree decomposition and its applications type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2026-January year: '2026' ... --- OA_place: repository OA_type: green _id: '21722' abstract: - lang: eng text: 'Partially observable Markov decision processes (POMDPs) are a central model for uncertainty in sequential decision making. The most basic objective is the reachability objective, where a target set must be eventually visited, and the more general parity objectives can model all omega-regular specifications. For such objectives, the computational analysis problems are the following: (a) qualitative analysis that asks whether the objective can be satisfied with probability 1 (almost-sure winning) or probability arbitrarily close to 1 (limit-sure winning); and (b) quantitative analysis that asks for the approximation of the optimal probability of satisfying the objective. For general POMDPs, almost-sure analysis for reachability objectives is EXPTIME-complete, but limit-sure and quantitative analyses for reachability objectives are undecidable; almost-sure, limit-sure, and quantitative analyses for parity objectives are all undecidable. A special class of POMDPs, called revealing POMDPs, has been studied recently in several works, and for this subclass the almost-sure analysis for parity objectives was shown to be EXPTIME-complete. In this work, we show that for revealing POMDPs the limit-sure analysis for parity objectives is EXPTIME-complete, and even the quantitative analysis for parity objectives can be achieved in EXPTIME.' acknowledgement: "This work was partially supported by the ANRT under the French CIFRE Ph.D program in collaboration between NyxAir and Paris-Dauphine University (Contract: CIFRE N° 2022/0513), by the French Agence Nationale de la Recherche (ANR) under reference ANR-21-CE40-\r\n0020 (CONVERGENCE project), by Austrian Science Fund (FWF) 10.55776/COE12, and by the ERC CoG 863818 (ForM-SMArt) grant." article_processing_charge: No arxiv: 1 author: - first_name: Ali full_name: Asadi, Ali id: 02d96aae-000e-11ec-b801-cadd0a5eefbb last_name: Asadi - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: David full_name: Lurie, David id: 579a6c20-34cf-11f1-acbd-8c2f19cdb4da last_name: Lurie - first_name: Raimundo J full_name: Saona Urmeneta, Raimundo J id: BD1DF4C4-D767-11E9-B658-BC13E6697425 last_name: Saona Urmeneta orcid: 0000-0001-5103-038X citation: ama: 'Asadi A, Chatterjee K, Lurie D, Saona Urmeneta RJ. Revealing POMDPs: Qualitative and quantitative analysis for parity objectives. In: Proceedings of the AAAI Conference on Artificial Intelligence. Vol 40. Association for the Advancement of Artificial Intelligence; 2026:36146-36154. doi:10.1609/aaai.v40i43.40932' apa: 'Asadi, A., Chatterjee, K., Lurie, D., & Saona Urmeneta, R. J. (2026). Revealing POMDPs: Qualitative and quantitative analysis for parity objectives. In Proceedings of the AAAI Conference on Artificial Intelligence (Vol. 40, pp. 36146–36154). Singapore, Singapore: Association for the Advancement of Artificial Intelligence. https://doi.org/10.1609/aaai.v40i43.40932' chicago: 'Asadi, Ali, Krishnendu Chatterjee, David Lurie, and Raimundo J Saona Urmeneta. “Revealing POMDPs: Qualitative and Quantitative Analysis for Parity Objectives.” In Proceedings of the AAAI Conference on Artificial Intelligence, 40:36146–54. Association for the Advancement of Artificial Intelligence, 2026. https://doi.org/10.1609/aaai.v40i43.40932.' ieee: 'A. Asadi, K. Chatterjee, D. Lurie, and R. J. Saona Urmeneta, “Revealing POMDPs: Qualitative and quantitative analysis for parity objectives,” in Proceedings of the AAAI Conference on Artificial Intelligence, Singapore, Singapore, 2026, vol. 40, no. 43, pp. 36146–36154.' ista: 'Asadi A, Chatterjee K, Lurie D, Saona Urmeneta RJ. 2026. Revealing POMDPs: Qualitative and quantitative analysis for parity objectives. Proceedings of the AAAI Conference on Artificial Intelligence. AAAI: Conference on Artificial Intelligence vol. 40, 36146–36154.' mla: 'Asadi, Ali, et al. “Revealing POMDPs: Qualitative and Quantitative Analysis for Parity Objectives.” Proceedings of the AAAI Conference on Artificial Intelligence, vol. 40, no. 43, Association for the Advancement of Artificial Intelligence, 2026, pp. 36146–54, doi:10.1609/aaai.v40i43.40932.' short: A. Asadi, K. Chatterjee, D. Lurie, R.J. Saona Urmeneta, in:, Proceedings of the AAAI Conference on Artificial Intelligence, Association for the Advancement of Artificial Intelligence, 2026, pp. 36146–36154. conference: end_date: 2026-01-27 location: Singapore, Singapore name: 'AAAI: Conference on Artificial Intelligence' start_date: 2026-01-20 corr_author: '1' date_created: 2026-04-12T22:01:52Z date_published: 2026-03-14T00:00:00Z date_updated: 2026-05-04T11:44:14Z day: '14' department: - _id: KrCh doi: 10.1609/aaai.v40i43.40932 ec_funded: 1 external_id: arxiv: - '2511.13134' intvolume: ' 40' issue: '43' language: - iso: eng main_file_link: - url: https://doi.org/10.48550/arXiv.2511.13134 month: '03' oa_version: Preprint page: 36146-36154 project: - _id: 0599E47C-7A3F-11EA-A408-12923DDC885E call_identifier: H2020 grant_number: '863818' name: 'Formal Methods for Stochastic Models: Algorithms and Applications' publication: Proceedings of the AAAI Conference on Artificial Intelligence publication_identifier: eissn: - 2374-3468 issn: - 2159-5399 publication_status: published publisher: Association for the Advancement of Artificial Intelligence quality_controlled: '1' scopus_import: '1' status: public title: 'Revealing POMDPs: Qualitative and quantitative analysis for parity objectives' type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 40 year: '2026' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '21725' abstract: - lang: eng text: "The initial–final mass relation (IFMR) links a star’s birth mass to the mass of its white dwarf (WD) remnant, providing key constraints on stellar evolution. Open clusters offer the most straightforward way to empirically determine the IFMR, as their well-defined ages allow for direct progenitor lifetime estimates. We construct the most comprehensive open cluster WD IFMR to date by combining new spectroscopy of 22 WDs with an extensive literature review of WDs with strong cluster associations. To minimize systematics, we restrict our analysis to spectroscopically confirmed hydrogen-atmosphere (DA) WDs consistent with single-stellar origins. We separately analyze a subset with reliable Gaia-based astrometric membership assessments, as well as a full sample that adds WDs with strong cluster associations whose membership cannot be reliably assessed with Gaia. The Gaia-based sample includes 69 spectroscopically confirmed DA WDs, more than doubling the sample size of previous Gaia-based open cluster IFMRs. The full sample, which includes 53 additional literature WDs,\r\nincreases the total number of cluster WDs by over 50% relative to earlier works. We provide functional forms for both the Gaia-based and full-sample IFMRs. The Gaia-based result useful for Mi � 2.67 M⊙ is Mf = [0.179 0.100H (Mi 3.84 M )] × (Mi 3.84 M ) + 0.628 M , where H(x) is the Heaviside step function. Comparing our IFMR to recent literature, we identify significant deviations from best-fit IFMRs derived from both Gaia-based volume-limited samples of field WDs and double WD binaries, with the largest discrepancy occurring for initial masses of about 5 M⊙." acknowledgement: "The authors would like to thank the anonymous referee for their constructive feedback, which helped improve the clarify of the manuscript. This work was supported in part by the Natural Sciences and Engineering Research Council of Canada Discovery grants Nos. DG-RGPIN-2022-03051 and DG-RGPIN-2023-04486. This research received funding from the European Research Council under the European Union’s Horizon 2020 research and innovation program number 101002408 (MOS100PC). This work includes results based on observations obtained at the international Gemini Observatory, a program of NSF’s NOIRLab, which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation on behalf of the Gemini Observatory partnership: the National Science Foundation (United States), National Research Council (Canada), Agencia Nacional de Investigación y Desarrollo (Chile), Ministerio de Ciencia, Tecnología e Innovación (Argentina), Ministério da Ciência, Tecnologia, Inovações e Comunicações (Brazil), and Korea Astronomy and Space Science Institute (Republic of Korea). This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. Some of the data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. Gemini spectra were processed using the DRAGONS package (K. Labrie et al. 2023). LRIS spectra were reduced using the Lpipe pipeline (D. A. Perley 2019).\r\n\r\nFacilities: Gaia - (DR2 & DR3), Gemini:Gillett - Gillett Gemini North Telescope (GMOS-N), Gemini:South - Gemini South Telescope (GMOS-S), Keck:I - KECK I Telescope (LRIS).\r\n\r\nSoftware: Astropy (Astropy Collaboration et al. 2013,2018, 2022), emcee (D. Foreman-Mackey et al. 2013)." article_number: '69' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: David R. full_name: Miller, David R. last_name: Miller - first_name: Ilaria full_name: Caiazzo, Ilaria id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d last_name: Caiazzo orcid: 0000-0002-4770-5388 - first_name: Jeremy full_name: Heyl, Jeremy last_name: Heyl - first_name: Harvey B. full_name: Richer, Harvey B. last_name: Richer - first_name: Mark A. full_name: Hollands, Mark A. last_name: Hollands - first_name: Pier Emmanuel full_name: Tremblay, Pier Emmanuel last_name: Tremblay - first_name: Kareem full_name: El-Badry, Kareem last_name: El-Badry - first_name: Antonio C. full_name: Rodriguez, Antonio C. last_name: Rodriguez - first_name: Zachary P. full_name: Vanderbosch, Zachary P. last_name: Vanderbosch citation: ama: Miller DR, Caiazzo I, Heyl J, et al. The White Dwarf initial–final mass relation from open clusters in Gaia DR3. The Astrophysical Journal. 2026;996(1). doi:10.3847/1538-4357/ae18c8 apa: Miller, D. R., Caiazzo, I., Heyl, J., Richer, H. B., Hollands, M. A., Tremblay, P. E., … Vanderbosch, Z. P. (2026). The White Dwarf initial–final mass relation from open clusters in Gaia DR3. The Astrophysical Journal. IOP Publishing. https://doi.org/10.3847/1538-4357/ae18c8 chicago: Miller, David R., Ilaria Caiazzo, Jeremy Heyl, Harvey B. Richer, Mark A. Hollands, Pier Emmanuel Tremblay, Kareem El-Badry, Antonio C. Rodriguez, and Zachary P. Vanderbosch. “The White Dwarf Initial–Final Mass Relation from Open Clusters in Gaia DR3.” The Astrophysical Journal. IOP Publishing, 2026. https://doi.org/10.3847/1538-4357/ae18c8. ieee: D. R. Miller et al., “The White Dwarf initial–final mass relation from open clusters in Gaia DR3,” The Astrophysical Journal, vol. 996, no. 1. IOP Publishing, 2026. ista: Miller DR, Caiazzo I, Heyl J, Richer HB, Hollands MA, Tremblay PE, El-Badry K, Rodriguez AC, Vanderbosch ZP. 2026. The White Dwarf initial–final mass relation from open clusters in Gaia DR3. The Astrophysical Journal. 996(1), 69. mla: Miller, David R., et al. “The White Dwarf Initial–Final Mass Relation from Open Clusters in Gaia DR3.” The Astrophysical Journal, vol. 996, no. 1, 69, IOP Publishing, 2026, doi:10.3847/1538-4357/ae18c8. short: D.R. Miller, I. Caiazzo, J. Heyl, H.B. Richer, M.A. Hollands, P.E. Tremblay, K. El-Badry, A.C. Rodriguez, Z.P. Vanderbosch, The Astrophysical Journal 996 (2026). date_created: 2026-04-12T22:01:52Z date_published: 2026-01-01T00:00:00Z date_updated: 2026-04-13T08:39:39Z day: '01' ddc: - '520' department: - _id: IlCa doi: 10.3847/1538-4357/ae18c8 external_id: arxiv: - '2510.24877' file: - access_level: open_access checksum: 65a8237a519188af83b6dc4d47ad85fa content_type: application/pdf creator: dernst date_created: 2026-04-13T08:36:50Z date_updated: 2026-04-13T08:36:50Z file_id: '21733' file_name: 2026_AstrophysicalJournal_Miller.pdf file_size: 19310053 relation: main_file success: 1 file_date_updated: 2026-04-13T08:36:50Z has_accepted_license: '1' intvolume: ' 996' issue: '1' keyword: - White dwarf stars - Open star clusters - Compact objects - Stellar evolution language: - iso: eng month: '01' oa: 1 oa_version: Published Version publication: The Astrophysical Journal publication_identifier: eissn: - 1538-4357 issn: - 0004-637X publication_status: published publisher: IOP Publishing quality_controlled: '1' scopus_import: '1' status: public title: The White Dwarf initial–final mass relation from open clusters in Gaia DR3 tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 996 year: '2026' ... --- OA_place: repository OA_type: green _id: '21737' abstract: - lang: eng text: In calculus, l'Hopital's rule provides a simple way to evaluate the limits of quotient functions when both the numerator and denominator vanish. But what happens when we move beyond real functions on a real interval? In this article, we study when the quotient of two complex-valued functions in higher dimension can be defined continuously at the points where both functions vanish. Surprisingly, the answer is far subtler than in the real-valued setting. We provide a complete characterization for the continuity of the quotient function. We also point out why extending this result to smoother quotients remains an intriguing challenge. acknowledgement: "This project was funded in part by the European Research Council (ERC Consolidator Grant 101045083 CoDiNA) and the National Science Foundation CAREER Award 2239062.\r\n" article_number: '2602.09958' article_processing_charge: No arxiv: 1 author: - first_name: Albert full_name: Chern, Albert last_name: Chern - first_name: Sadashige full_name: Ishida, Sadashige id: 6F7C4B96-A8E9-11E9-A7CA-09ECE5697425 last_name: Ishida orcid: 0000-0002-3121-3100 citation: ama: Chern A, Ishida S. L’Hopital rules for complex-valued functions in higher dimensions. arXiv. doi:10.48550/ARXIV.2602.09958 apa: Chern, A., & Ishida, S. (n.d.). L’Hopital rules for complex-valued functions in higher dimensions. arXiv. https://doi.org/10.48550/ARXIV.2602.09958 chicago: Chern, Albert, and Sadashige Ishida. “L’Hopital Rules for Complex-Valued Functions in Higher Dimensions.” ArXiv, n.d. https://doi.org/10.48550/ARXIV.2602.09958. ieee: A. Chern and S. Ishida, “L’Hopital rules for complex-valued functions in higher dimensions,” arXiv. . ista: Chern A, Ishida S. L’Hopital rules for complex-valued functions in higher dimensions. arXiv, 2602.09958. mla: Chern, Albert, and Sadashige Ishida. “L’Hopital Rules for Complex-Valued Functions in Higher Dimensions.” ArXiv, 2602.09958, doi:10.48550/ARXIV.2602.09958. short: A. Chern, S. Ishida, ArXiv (n.d.). corr_author: '1' date_created: 2026-04-15T16:28:24Z date_published: 2026-02-10T00:00:00Z date_updated: 2026-04-28T10:56:30Z day: '10' ddc: - '510' department: - _id: GradSch - _id: ChWo doi: 10.48550/ARXIV.2602.09958 external_id: arxiv: - '2602.09958' file: - access_level: open_access checksum: 6a76591c723d3e949ad5afa9f7dbb2ee content_type: application/pdf creator: dernst date_created: 2026-04-28T10:53:27Z date_updated: 2026-04-28T10:53:27Z file_id: '21771' file_name: 2026_arXiv_2602.09958.pdf file_size: 867109 relation: main_file success: 1 file_date_updated: 2026-04-28T10:53:27Z has_accepted_license: '1' keyword: - l’Hopital theorem - complex functions language: - iso: eng month: '02' oa: 1 oa_version: Preprint project: - _id: 34bc2376-11ca-11ed-8bc3-9a3b3961a088 grant_number: '101045083' name: Computational Discovery of Numerical Algorithms for Animation and Simulation of Natural Phenomena publication: arXiv publication_status: submitted status: public title: L'Hopital rules for complex-valued functions in higher dimensions tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: preprint user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2026' ... --- OA_place: publisher OA_type: hybrid PlanS_conform: '1' _id: '21743' abstract: - lang: eng text: We present symplectic structures on the shape space of unparameterized space curves that generalize the classical Marsden–Weinstein structure. Our method integrates the Liouville 1-form of the Marsden–Weinstein structure with Riemannian structures that have been introduced in mathematical shape analysis. We also derive Hamiltonian vector fields for several classical Hamiltonian functions with respect to these new symplectic structures. acknowledgement: The authors are grateful to Boris Khesin for valuable comments on the MW symplectic structure and S. Ishida thanks Albert Chern for insightful discussions on space curves and Chris Wojtan for his continuous support. M. Bauer was partially supported by NSF grant DMS-1953244 and by the Binational Science Foundation (BSF). S. Ishida was partially supported by ERC Consolidator Grant 101045083 “CoDiNA” funded by the European Research Council. Some figures were generated by the software Houdini and its education license was provided by SideFX. Open access funding provided by University of Vienna. article_number: '45' article_processing_charge: Yes (via OA deal) article_type: original arxiv: 1 author: - first_name: Martin full_name: Bauer, Martin last_name: Bauer - first_name: Sadashige full_name: Ishida, Sadashige id: 6F7C4B96-A8E9-11E9-A7CA-09ECE5697425 last_name: Ishida orcid: 0000-0002-3121-3100 - first_name: Peter W. full_name: Michor, Peter W. last_name: Michor citation: ama: Bauer M, Ishida S, Michor PW. Symplectic structures on the space of space curves. Journal of Nonlinear Science. 2026;36(2). doi:10.1007/s00332-026-10266-8 apa: Bauer, M., Ishida, S., & Michor, P. W. (2026). Symplectic structures on the space of space curves. Journal of Nonlinear Science. Springer Nature. https://doi.org/10.1007/s00332-026-10266-8 chicago: Bauer, Martin, Sadashige Ishida, and Peter W. Michor. “Symplectic Structures on the Space of Space Curves.” Journal of Nonlinear Science. Springer Nature, 2026. https://doi.org/10.1007/s00332-026-10266-8. ieee: M. Bauer, S. Ishida, and P. W. Michor, “Symplectic structures on the space of space curves,” Journal of Nonlinear Science, vol. 36, no. 2. Springer Nature, 2026. ista: Bauer M, Ishida S, Michor PW. 2026. Symplectic structures on the space of space curves. Journal of Nonlinear Science. 36(2), 45. mla: Bauer, Martin, et al. “Symplectic Structures on the Space of Space Curves.” Journal of Nonlinear Science, vol. 36, no. 2, 45, Springer Nature, 2026, doi:10.1007/s00332-026-10266-8. short: M. Bauer, S. Ishida, P.W. Michor, Journal of Nonlinear Science 36 (2026). date_created: 2026-04-16T07:29:17Z date_published: 2026-04-15T00:00:00Z date_updated: 2026-04-28T09:59:01Z day: '15' ddc: - '510' department: - _id: GradSch - _id: ChWo doi: 10.1007/s00332-026-10266-8 external_id: arxiv: - '2407.19908' file: - access_level: open_access checksum: 760de2631b6fd7d57bcd5115ed36c0a2 content_type: application/pdf creator: dernst date_created: 2026-04-28T09:55:32Z date_updated: 2026-04-28T09:55:32Z file_id: '21770' file_name: 2026_JourNonlinearScience_Bauer.pdf file_size: 1108518 relation: main_file success: 1 file_date_updated: 2026-04-28T09:55:32Z has_accepted_license: '1' intvolume: ' 36' issue: '2' language: - iso: eng month: '04' oa: 1 oa_version: Published Version project: - _id: 34bc2376-11ca-11ed-8bc3-9a3b3961a088 grant_number: '101045083' name: Computational Discovery of Numerical Algorithms for Animation and Simulation of Natural Phenomena publication: Journal of Nonlinear Science publication_identifier: eissn: - 1432-1467 issn: - 0938-8974 publication_status: published publisher: Springer Nature quality_controlled: '1' related_material: record: - id: '17361' relation: earlier_version status: public scopus_import: '1' status: public title: Symplectic structures on the space of space curves tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 36 year: '2026' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '21744' abstract: - lang: eng text: The paraventricular hypothalamus (PVH) controls behavioral and physiologic processes, including appetite, social behavior, autonomic outflow, and pituitary hormone secretion. However, molecular markers for centrally projecting PVH neuron populations remain largely undefined, and a complete census of PVH cell types has not been established. Therefore, we performed extensive single-cell/nucleus RNA sequencing to catalog PVH neuron subtypes and multiplexed error-robust fluorescence in situ hybridization (MERFISH) to map them spatially. Our spatial transcriptomic atlas resolves 26 Sim1+ and 29 GABAergic neuron populations from the PVH and surrounding areas. Additionally, projection-based profiling identified neurons that project to the parabrachial region (PB) and spinal cord, helping to determine PVH populations that regulate satiety and sympathetic nervous system activity, respectively. Notably, activation of PB-projecting PVH neurons expressing Brs3 reduces food intake, and silencing them causes obesity. Together, this atlas contributes high-resolution PVH spatial and circuit-based gene expression profiles, representing a valuable resource for the field of homeostasis. acknowledgement: "We would like to thank Drs. Mark Andermann, Joel Geerling, and Clifford\r\nSaper, as well as the Lowell, Tsai, and Resch laboratories for helpful discussions;\r\nAlysia Berns, Jia Yu, and Yanfang Li for technical support; the BNORC\r\nFunctional Genomics and Bioinformatics Core (P30DK046200) and the Iowa\r\nInstitute for Human Genetics Genomics Division (IIHG, RRID: SCR_023422)\r\nfor helpful discussions and technical assistance with sc/snRNA-seq; Zachary\r\nNiziolek and the Bauer Core Facility at Harvard University, the BIDMC Flow Cytometry\r\nCore, and Heath Vignes, Michael Shey, and Thomas Kaufman of the\r\nFlow Cytometry Facility at the University of Iowa Carver College of Medicine\r\nfor helpful discussions and technical support; the ICCB-Longwood Screening\r\nFacility of Harvard Medical School for assistance with the snRNA-seq\r\nexperiments; Dr. Sayak Mitter and Vizgen support for technical assistance\r\nwith the MERSCOPE platform; and Mara Jendro and Li-Chun (Queena) Lin\r\nfor their assistance with MERSCOPE experiments within the Iowa\r\nNeuroBank Core in the Iowa Neuroscience Institute at the University of Iowa\r\nCarver College of Medicine. This research was funded by the following NIH\r\ngrants to L.T.T.: R01DK128406; to B.B.L.: R01DK075632, R01DK134427,\r\nand R01DK096010; to J.M.R.: R00HL144923 and R01NS141072; and to M.C.M.: F31HL170784; T.C.B. and M.C.M. were supported by a pharmacological\r\nsciences predoctoral training grant T32GM144636. Additional funding\r\nto J.M.R. came from the American Heart Association (AHA 935362), a University\r\nof Iowa Fraternal Order of Eagles Diabetes Research Center Pilot and\r\nFeasibility Catalyst Grant, and an Iowa Neuroscience Institute Early Stage\r\nInvestigator award from the Carver Trust. Y.L. was supported by a predoctoral\r\nfellowship from the American Heart Association (AHA 25PRE1372983). A.M.D.\r\nwas supported by a postdoctoral fellowship from the Charles A. King Trust." article_number: '116904' article_processing_charge: Yes article_type: original author: - first_name: Yuxi full_name: Li, Yuxi last_name: Li - first_name: Trevor C. full_name: Butler, Trevor C. last_name: Butler - first_name: Stefano full_name: Nardone, Stefano last_name: Nardone - first_name: Christopher L. full_name: Jacobs, Christopher L. last_name: Jacobs - first_name: Amelia May Barnett full_name: Douglass, Amelia May Barnett id: de5f6fda-80fb-11ef-996f-a8c4ecd8e289 last_name: Douglass orcid: 0000-0001-5398-6473 - first_name: Joseph C. full_name: Madara, Joseph C. last_name: Madara - first_name: Miriam C. full_name: McDonough, Miriam C. last_name: McDonough - first_name: Jenkang full_name: Tao, Jenkang last_name: Tao - first_name: Elijah D. full_name: Lowenstein, Elijah D. last_name: Lowenstein - first_name: Luhong full_name: Wang, Luhong last_name: Wang - first_name: Deepti full_name: Pant, Deepti last_name: Pant - first_name: Samuel J. full_name: Walker, Samuel J. last_name: Walker - first_name: Annette full_name: Wang, Annette last_name: Wang - first_name: Harini full_name: Srinivasan, Harini last_name: Srinivasan - first_name: Zongfang full_name: Yang, Zongfang last_name: Yang - first_name: John N. full_name: Campbell, John N. last_name: Campbell - first_name: Linus T. full_name: Tsai, Linus T. last_name: Tsai - first_name: Bradford B. full_name: Lowell, Bradford B. last_name: Lowell - first_name: Jon M. full_name: Resch, Jon M. last_name: Resch citation: ama: Li Y, Butler TC, Nardone S, et al. A spatial and projection-based transcriptomic atlas of paraventricular hypothalamic cell types. Cell Reports. 2026;45(2). doi:10.1016/j.celrep.2025.116904 apa: Li, Y., Butler, T. C., Nardone, S., Jacobs, C. L., Douglass, A. M., Madara, J. C., … Resch, J. M. (2026). A spatial and projection-based transcriptomic atlas of paraventricular hypothalamic cell types. Cell Reports. Elsevier. https://doi.org/10.1016/j.celrep.2025.116904 chicago: Li, Yuxi, Trevor C. Butler, Stefano Nardone, Christopher L. Jacobs, Amelia M. Douglass, Joseph C. Madara, Miriam C. McDonough, et al. “A Spatial and Projection-Based Transcriptomic Atlas of Paraventricular Hypothalamic Cell Types.” Cell Reports. Elsevier, 2026. https://doi.org/10.1016/j.celrep.2025.116904. ieee: Y. Li et al., “A spatial and projection-based transcriptomic atlas of paraventricular hypothalamic cell types,” Cell Reports, vol. 45, no. 2. Elsevier, 2026. ista: Li Y, Butler TC, Nardone S, Jacobs CL, Douglass AM, Madara JC, McDonough MC, Tao J, Lowenstein ED, Wang L, Pant D, Walker SJ, Wang A, Srinivasan H, Yang Z, Campbell JN, Tsai LT, Lowell BB, Resch JM. 2026. A spatial and projection-based transcriptomic atlas of paraventricular hypothalamic cell types. Cell Reports. 45(2), 116904. mla: Li, Yuxi, et al. “A Spatial and Projection-Based Transcriptomic Atlas of Paraventricular Hypothalamic Cell Types.” Cell Reports, vol. 45, no. 2, 116904, Elsevier, 2026, doi:10.1016/j.celrep.2025.116904. short: Y. Li, T.C. Butler, S. Nardone, C.L. Jacobs, A.M. Douglass, J.C. Madara, M.C. McDonough, J. Tao, E.D. Lowenstein, L. Wang, D. Pant, S.J. Walker, A. Wang, H. Srinivasan, Z. Yang, J.N. Campbell, L.T. Tsai, B.B. Lowell, J.M. Resch, Cell Reports 45 (2026). date_created: 2026-04-16T13:51:29Z date_published: 2026-02-24T00:00:00Z date_updated: 2026-05-04T12:00:31Z day: '24' ddc: - '570' department: - _id: AmDo doi: 10.1016/j.celrep.2025.116904 external_id: pmid: - '41581146' file: - access_level: open_access checksum: 82098dd9d0ca609119f9f2c6beb4fc1e content_type: application/pdf creator: dernst date_created: 2026-05-04T11:58:51Z date_updated: 2026-05-04T11:58:51Z file_id: '21793' file_name: 2026_CellReports_Li.pdf file_size: 38532865 relation: main_file success: 1 file_date_updated: 2026-05-04T11:58:51Z has_accepted_license: '1' intvolume: ' 45' issue: '2' language: - iso: eng month: '02' oa: 1 oa_version: Published Version pmid: 1 publication: Cell Reports publication_identifier: eissn: - 2211-1247 issn: - 2639-1856 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: A spatial and projection-based transcriptomic atlas of paraventricular hypothalamic cell types tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 45 year: '2026' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '21745' abstract: - lang: eng text: 'The small DAHe and DAe spectral classes comprise isolated, hydrogen-dominated atmosphere white dwarfs that exhibit variable photometric flux and Balmer line emission. These mysterious systems offer unique insight into the complex interplay between magnetic fields, stellar rotation and atmospheric activity in single white dwarfs. DAHe stars have detectable magnetic fields through Zeeman-split spectral lines, whereas DAe stars lack such splitting. We report the first discovery and characterization of magnetism in the DAe white dwarf WD J165335.21−100116.33 with new time-resolved spectropolarimetry from FORS2. We detect a weak but variable longitudinal magnetic field with values Bz > −9.2 ± 2.4 kG and Bz < −2.2 ± 1.0 kG. Independent ZTF and ATLAS photometry reveal a consistent period of P = 80.3070 ± 0.0007 h. Time-resolved optical spectroscopy obtained with six ground-based instruments demonstrates strong modulation in the strength of the Hα and Hβ Balmer line emission with P = 80.2922 ± 0.0108 h. The photometric flux and Balmer emission strength vary in antiphase, with the strongest magnetic detections coinciding with phases of low photometric flux and strong line emission. These characteristicssupport the theory that a magnetically active, temperature-inverted spot/region is producing an optically thin chromospheric emission region. Comparison with other DAe and DAHe white dwarfsreveals all systems have a strikingly similar antiphase phenomenology, reinforcing the theory that they are subject to a unified physical mechanism. With the detection of a weak magnetic field, we reclassify WD J165335.21−100116.33 as a low-field DAHe white dwarf. ' acknowledgement: "This project has received funding from the European Research Council under the European Union’s Horizon 2020 research and innovation programme (Grant agreement numbers 101002408). The observationsfrom the FOcal Reducer/low dispersion Spectrograph 2 (FORS2) instrument were collected at the European Southern Observatory (ESO) under ESO programme(s) 113.26ES.001. This work has made use of data from the European Space\r\nAgency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/conso\r\nrtium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. Based on observations obtained with the Samuel Oschin Telescope 48-inch and the 60-inch Telescope at the Palomar Observatory as part of the Zwicky Transient Facility project. ZTF is supported by the National Science Foundation under Grants No. AST-1440341 and AST-2034437 and a collaboration including current partners Caltech, IPAC, the Weizmann Institute for Science, the Oskar Klein Center at Stockholm University, the University of Maryland, Deutsches Elektronen-Synchrotron and\r\nHumboldt University, the TANGO Consortium of Taiwan, the University of Wisconsin at Milwaukee, Trinity College Dublin, Lawrence Livermore National Laboratories, IN2P3, University\r\nof Warwick, Ruhr University Bochum, Northwestern University and former partners the University of Washington, Los Alamos National Laboratories, and Lawrence Berkeley National Laboratories. Operations are conducted by COO, IPAC, and UW. This work has made use of data from the Asteroid Terrestrialimpact Last Alert System (ATLAS) project. The Asteroid Terrestrial-impact Last Alert System (ATLAS) project is primarily funded to search for near earth asteroids through NASA grants NN12AR55G, 80NSSC18K0284, and 80NSSC18K1575; byproducts of the NEO search include images and catalogs from the survey area. This work was partially funded by Kepler/K2 grant J1944/80NSSC19K0112 and HST GO-15889, and STFC grants ST/T000198/1 and ST/S006109/1. The ATLAS science products have been made possible through the contributions of the University of Hawaii Institute for Astronomy, the Queen’s University Belfast, the Space Telescope Science Institute, the South African\r\nAstronomical Observatory, and The Millennium Institute of Astrophysics (MAS), Chile.\r\nThis work makes use of observations from the Las Cumbres Observatory global telescope network. Research at Lick Observatory is partially supported by a generous gift from Google. A major upgrade of the Kast spectrograph on the Shane 3 m telescope at Lick Observatory was made possible through generous gifts from William and Marina Kast as well as the Heising–Simons Foundation. The Isaac Newton Telescope is operated on the island of La Palma by the Isaac Newton Group of Telescopes in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias.This paper includes data gathered with the 6.5 meter Magellan Telescopes located at Las Campanas Observatory, Chile. Observations reported here were obtained at the Multiple Mirror Telescope (MMT) Observatory, a joint facility of the Smithsonian Institution and the University of Arizona. Based on observations collected at Centro Astronómico Hispano en Andalucía (CAHA) at Calar Alto, operated jointly by Junta de Andalucía and Consejo Superior de Investigaciones Científicas (IAA-CSIC)." article_number: stag505 article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Abbigail K. full_name: Elms, Abbigail K. last_name: Elms - first_name: Stefano full_name: Bagnulo, Stefano last_name: Bagnulo - first_name: Pier Emmanuel full_name: Tremblay, Pier Emmanuel last_name: Tremblay - first_name: Tim full_name: Cunningham, Tim last_name: Cunningham - first_name: James full_name: Munday, James last_name: Munday - first_name: John full_name: Landstreet, John last_name: Landstreet - first_name: Kareem full_name: El-Badry, Kareem last_name: El-Badry - first_name: Ilaria full_name: Caiazzo, Ilaria id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d last_name: Caiazzo orcid: 0000-0002-4770-5388 - first_name: Carl full_name: Melis, Carl last_name: Melis - first_name: Viktoria full_name: Pinter, Viktoria last_name: Pinter - first_name: Alycia full_name: Weinberger, Alycia last_name: Weinberger citation: ama: Elms AK, Bagnulo S, Tremblay PE, et al. Detection of a weak magnetic field in the Balmer emission line white dwarf WDJ1653−1001. Monthly Notices of the Royal Astronomical Society. 2026;548(1). doi:10.1093/mnras/stag505 apa: Elms, A. K., Bagnulo, S., Tremblay, P. E., Cunningham, T., Munday, J., Landstreet, J., … Weinberger, A. (2026). Detection of a weak magnetic field in the Balmer emission line white dwarf WDJ1653−1001. Monthly Notices of the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/stag505 chicago: Elms, Abbigail K., Stefano Bagnulo, Pier Emmanuel Tremblay, Tim Cunningham, James Munday, John Landstreet, Kareem El-Badry, et al. “Detection of a Weak Magnetic Field in the Balmer Emission Line White Dwarf WDJ1653−1001.” Monthly Notices of the Royal Astronomical Society. Oxford University Press, 2026. https://doi.org/10.1093/mnras/stag505. ieee: A. K. Elms et al., “Detection of a weak magnetic field in the Balmer emission line white dwarf WDJ1653−1001,” Monthly Notices of the Royal Astronomical Society, vol. 548, no. 1. Oxford University Press, 2026. ista: Elms AK, Bagnulo S, Tremblay PE, Cunningham T, Munday J, Landstreet J, El-Badry K, Caiazzo I, Melis C, Pinter V, Weinberger A. 2026. Detection of a weak magnetic field in the Balmer emission line white dwarf WDJ1653−1001. Monthly Notices of the Royal Astronomical Society. 548(1), stag505. mla: Elms, Abbigail K., et al. “Detection of a Weak Magnetic Field in the Balmer Emission Line White Dwarf WDJ1653−1001.” Monthly Notices of the Royal Astronomical Society, vol. 548, no. 1, stag505, Oxford University Press, 2026, doi:10.1093/mnras/stag505. short: A.K. Elms, S. Bagnulo, P.E. Tremblay, T. Cunningham, J. Munday, J. Landstreet, K. El-Badry, I. Caiazzo, C. Melis, V. Pinter, A. Weinberger, Monthly Notices of the Royal Astronomical Society 548 (2026). date_created: 2026-04-19T22:07:42Z date_published: 2026-05-01T00:00:00Z date_updated: 2026-05-04T12:11:53Z day: '01' ddc: - '520' department: - _id: IlCa doi: 10.1093/mnras/stag505 external_id: arxiv: - '2603.12048' file: - access_level: open_access checksum: 75c48d70d10a9a48875f577e04da80bc content_type: application/pdf creator: dernst date_created: 2026-05-04T12:10:40Z date_updated: 2026-05-04T12:10:40Z file_id: '21794' file_name: 2026_MNRAS_Elms.pdf file_size: 4991495 relation: main_file success: 1 file_date_updated: 2026-05-04T12:10:40Z has_accepted_license: '1' intvolume: ' 548' issue: '1' language: - iso: eng month: '05' oa: 1 oa_version: Published Version publication: Monthly Notices of the Royal Astronomical Society publication_identifier: eissn: - 1365-2966 issn: - 0035-8711 publication_status: published publisher: Oxford University Press quality_controlled: '1' scopus_import: '1' status: public title: Detection of a weak magnetic field in the Balmer emission line white dwarf WDJ1653−1001 tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 548 year: '2026' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '21746' abstract: - lang: eng text: As vertebrates transitioned from water to land, locomotion shifted from undulatory swimming to limb-based movement. How spinal circuits and their cell types evolved to support this transition remains unclear. We leverage frog metamorphosis, which recapitulates this transition within a single organism, to define how spinal circuits generate aquatic versus terrestrial motor patterns. At swim stages, spinal architecture is uniform, with a transcriptionally and anatomically homogeneous motor and interneurons. As limbs develop and their movement complexifies, spinal circuits expand in neuron number and subtype diversity. This expansion is most pronounced for V1 inhibitory neurons, which increase ∼70-fold and diversify into transcriptionally distinct subtypes. Disrupting transcription factors defining emerging motor and V1 populations reveals molecular segregation between swim and limb circuits, highlighting the role of subtype diversity in motor coordination. A multifold increase in inhibitory neuron diversity thus underlies the tail-to-limb locomotor transition, providing a framework for spinal circuit adaptation during vertebrate evolution. acknowledged_ssus: - _id: Bio - _id: LifeSc acknowledgement: 'We would like to thank the members of the Sweeney Lab, Mario de Bono, Michael Forsthofer, Katharina Lust, and Meital Oren, for comments on the manuscript. We are also grateful to Tom Jessell and Chris Kintner for their scientific insight and mentorship during the conception of this project. It would also have not been possible without the technical support of the Aquatics and Imaging and Optics Facility support teams (ISTA). We thank Martin Estermann for preparing the initial draft of the graphical abstract and Niki Barolini for the final version. In addition, we thank our funding sources for providing the resources to do these experiments: GFF NÖ FTI Strategy Lower Austria dissertation grant FT121-D-046 (to D.V.), Horizon Europe ERC starting grant 101041551 (to Y.I., L.B.S., F.A.T., and D.V.), Special Research Program (SFB) of the Austrian Science Fund (FWF) project F7814-B (to L.B.S.), Austrian Science Fund (FWF) 10.55776/COE16 (to Y.I. and L.B.S.), NINDS 5R35NS116858 (to J.S.D.), CZI grant DAF2020-225401 (DOI) 10.37921/120055ratwvi (to R.H.), NIH grant R01NS123116 (to J.B.B.), American Lebanese Syrian Associated Charities (ALSAC) (to J.B.B.), German Academic Exchange Service (DAAD) IFI grant 57515251-91853472 (to Z.H.), and Project A.L.S. (to S.B.-M.).' article_number: '117227' article_processing_charge: Yes article_type: original author: - first_name: David full_name: Vijatovic, David id: cf391e77-ec3c-11ea-a124-d69323410b58 last_name: Vijatovic - first_name: 'Florina Alexandra ' full_name: 'Toma, Florina Alexandra ' id: 2f73f876-f128-11eb-9611-b96b5a30cb0e last_name: Toma - first_name: Y full_name: Ignatyev, Y last_name: Ignatyev - first_name: Zoe P full_name: Harrington, Zoe P id: a8144562-32c9-11ee-b5ce-d9800628bda2 last_name: Harrington orcid: 0009-0008-0158-4032 - first_name: Christoph M full_name: Sommer, Christoph M id: 4DF26D8C-F248-11E8-B48F-1D18A9856A87 last_name: Sommer orcid: 0000-0003-1216-9105 - first_name: Robert full_name: Hauschild, Robert id: 4E01D6B4-F248-11E8-B48F-1D18A9856A87 last_name: Hauschild orcid: 0000-0001-9843-3522 - first_name: Matthijs Geert full_name: Smits, Matthijs Geert id: 7a231d52-e216-11ee-a0bb-8acd55f8f1f0 last_name: Smits - first_name: Marco full_name: Dalla Vecchia, Marco id: 02a7a869-ff06-11ed-a87f-86649d6077e5 last_name: Dalla Vecchia - first_name: Alexandra J. full_name: Trevisan, Alexandra J. last_name: Trevisan - first_name: Phillip full_name: Chapman, Phillip last_name: Chapman - first_name: Mara full_name: Julseth, Mara id: 1cf464b2-dc7d-11ea-9b2f-f9b1aa9417d1 last_name: Julseth - first_name: Susan full_name: Brenner-Morton, Susan last_name: Brenner-Morton - first_name: Mariano I. full_name: Gabitto, Mariano I. last_name: Gabitto - first_name: Jeremy S. full_name: Dasen, Jeremy S. last_name: Dasen - first_name: Jay B. full_name: Bikoff, Jay B. last_name: Bikoff - first_name: Lora Beatrice Jaeger full_name: Sweeney, Lora Beatrice Jaeger id: 56BE8254-C4F0-11E9-8E45-0B23E6697425 last_name: Sweeney orcid: 0000-0001-9242-5601 citation: ama: Vijatovic D, Toma FA, Ignatyev Y, et al. Multifold increase in spinal inhibitory cell types with emergence of limb movement. Cell Reports. 2026;45(4). doi:10.1016/j.celrep.2026.117227 apa: Vijatovic, D., Toma, F. A., Ignatyev, Y., Harrington, Z. P., Sommer, C. M., Hauschild, R., … Sweeney, L. B. (2026). Multifold increase in spinal inhibitory cell types with emergence of limb movement. Cell Reports. Elsevier. https://doi.org/10.1016/j.celrep.2026.117227 chicago: Vijatovic, David, Florina Alexandra Toma, Y Ignatyev, Zoe P Harrington, Christoph M Sommer, Robert Hauschild, Matthijs Geert Smits, et al. “Multifold Increase in Spinal Inhibitory Cell Types with Emergence of Limb Movement.” Cell Reports. Elsevier, 2026. https://doi.org/10.1016/j.celrep.2026.117227. ieee: D. Vijatovic et al., “Multifold increase in spinal inhibitory cell types with emergence of limb movement,” Cell Reports, vol. 45, no. 4. Elsevier, 2026. ista: Vijatovic D, Toma FA, Ignatyev Y, Harrington ZP, Sommer CM, Hauschild R, Smits MG, Dalla Vecchia M, Trevisan AJ, Chapman P, Julseth M, Brenner-Morton S, Gabitto MI, Dasen JS, Bikoff JB, Sweeney LB. 2026. Multifold increase in spinal inhibitory cell types with emergence of limb movement. Cell Reports. 45(4), 117227. mla: Vijatovic, David, et al. “Multifold Increase in Spinal Inhibitory Cell Types with Emergence of Limb Movement.” Cell Reports, vol. 45, no. 4, 117227, Elsevier, 2026, doi:10.1016/j.celrep.2026.117227. short: D. Vijatovic, F.A. Toma, Y. Ignatyev, Z.P. Harrington, C.M. Sommer, R. Hauschild, M.G. Smits, M. Dalla Vecchia, A.J. Trevisan, P. Chapman, M. Julseth, S. Brenner-Morton, M.I. Gabitto, J.S. Dasen, J.B. Bikoff, L.B. Sweeney, Cell Reports 45 (2026). corr_author: '1' date_created: 2026-04-19T22:07:43Z date_published: 2026-04-28T00:00:00Z date_updated: 2026-05-04T12:27:06Z day: '28' ddc: - '570' department: - _id: LoSw - _id: GradSch - _id: TiVo - _id: Bio - _id: NiBa doi: 10.1016/j.celrep.2026.117227 external_id: pmid: - '41964955 ' file: - access_level: open_access checksum: 0d26cdb5b8d8dec3a911d8261a65cdef content_type: application/pdf creator: dernst date_created: 2026-05-04T12:20:10Z date_updated: 2026-05-04T12:20:10Z file_id: '21795' file_name: 2026_CellReports_Vijatovic.pdf file_size: 14925958 relation: main_file success: 1 file_date_updated: 2026-05-04T12:20:10Z has_accepted_license: '1' intvolume: ' 45' issue: '4' language: - iso: eng month: '04' oa: 1 oa_version: Published Version pmid: 1 project: - _id: ebb66355-77a9-11ec-83b8-b8ac210a4dae grant_number: '101041551' name: Development and Evolution of Tetrapod Motor Circuits - _id: 8da85f50-16d5-11f0-9cad-eab8b0ff6c9e grant_number: F7814 name: 'Stem Cell Modulation in Neural Development and Regeneration/ P14-Swim-to-limb transition: cell type to connection diversity' - _id: c08e9ad1-5a5b-11eb-8a69-9d1cf3b07473 grant_number: CZI01 name: Tools for automation and feedback microscopy - _id: bd73af52-d553-11ed-ba76-912049f0ac7a grant_number: FTI21-D-046 name: Development of V1 interneuron diversity during swim-to-walk transition of Xenopus metamorphosis publication: Cell Reports publication_identifier: eissn: - 2211-1247 issn: - 2639-1856 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: Multifold increase in spinal inhibitory cell types with emergence of limb movement tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 45 year: '2026' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '21747' abstract: - lang: eng text: Entanglement does not always require one particle per party. It was predicted some 30 years ago that a single photon traversing a beam splitter could violate a Bell inequality. Although initially debated, single-photon nonlocality was eventually demonstrated via homodyne measurements. Here, we present an alternate realization that avoids the complexity of homodyne measurements and potential loopholes in their implementation. We violate a Bell inequality by performing joint measurements on two copies of the same single-photon entangled state, where one photon acts as a phase reference for the other, making it self-referential. We observe CHSH parameters of 2.71 = 0.09 and 2.23 = 0.07, depending on the joint measurements implemented. This offers a perspective on single-photon nonlocality and a more accessible experimental route, potentially applicable to general mode-entangled states in diverse platforms. acknowledgement: European Union ERC (101071779 (GRAVITES)); European Union Horizon 2020 Research and Innovation Programme (899368 (EPIQUS)); European Union Horizon 2020 Research and Innovation Programme Marie Sklodowska-Curie (956071 (AppQInfo)); European Union HORIZON Europe Research and Innovation Programme (101135288 (EPIQUE)); FWF Austrian Science Fund (10.55776/COE1 (Quantum Science Austria), 10.55776/F71 (BeyondC), 10.55776/FG5 (Research Group 5)); United States Air Force Office of Scientific Research (FA9550-21-1-0355 (Q-Trust), FA8655-23-1-7063 (TIQI)). article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: Daniel full_name: Kun, Daniel last_name: Kun - first_name: Karl T full_name: Strömberg, Karl T id: 68011cd2-da32-11ee-a930-b2774c7aba5f last_name: Strömberg - first_name: Borivoje full_name: Dakić, Borivoje last_name: Dakić - first_name: Philip full_name: Walther, Philip last_name: Walther - first_name: Lee A. full_name: Rozema, Lee A. last_name: Rozema citation: ama: Kun D, Strömberg KT, Dakić B, Walther P, Rozema LA. Testing single-photon entanglement using self-referential measurements. Optica. 2026;13(4):745-751. doi:10.1364/OPTICA.586172 apa: Kun, D., Strömberg, K. T., Dakić, B., Walther, P., & Rozema, L. A. (2026). Testing single-photon entanglement using self-referential measurements. Optica. Optica Publishing Group. https://doi.org/10.1364/OPTICA.586172 chicago: Kun, Daniel, Karl T Strömberg, Borivoje Dakić, Philip Walther, and Lee A. Rozema. “Testing Single-Photon Entanglement Using Self-Referential Measurements.” Optica. Optica Publishing Group, 2026. https://doi.org/10.1364/OPTICA.586172. ieee: D. Kun, K. T. Strömberg, B. Dakić, P. Walther, and L. A. Rozema, “Testing single-photon entanglement using self-referential measurements,” Optica, vol. 13, no. 4. Optica Publishing Group, pp. 745–751, 2026. ista: Kun D, Strömberg KT, Dakić B, Walther P, Rozema LA. 2026. Testing single-photon entanglement using self-referential measurements. Optica. 13(4), 745–751. mla: Kun, Daniel, et al. “Testing Single-Photon Entanglement Using Self-Referential Measurements.” Optica, vol. 13, no. 4, Optica Publishing Group, 2026, pp. 745–51, doi:10.1364/OPTICA.586172. short: D. Kun, K.T. Strömberg, B. Dakić, P. Walther, L.A. Rozema, Optica 13 (2026) 745–751. date_created: 2026-04-19T22:07:44Z date_published: 2026-04-20T00:00:00Z date_updated: 2026-05-05T12:05:47Z day: '20' ddc: - '530' department: - _id: OnHo doi: 10.1364/OPTICA.586172 external_id: arxiv: - '2511.21819' file: - access_level: open_access checksum: f6e62a93f274e0c07197bf4e457eff31 content_type: application/pdf creator: dernst date_created: 2026-05-05T12:01:08Z date_updated: 2026-05-05T12:01:08Z file_id: '21799' file_name: 2026_Optica_Kun.pdf file_size: 858539 relation: main_file success: 1 file_date_updated: 2026-05-05T12:01:08Z has_accepted_license: '1' intvolume: ' 13' issue: '4' language: - iso: eng month: '04' oa: 1 oa_version: Published Version page: 745-751 project: - _id: bdb108fd-d553-11ed-ba76-83dc74a9864f grant_number: F07105 name: QUANTUM INFORMATION SYSTEMS BEYOND CLASSICAL CAPABILITIES / P5- Integration of Superconducting Quantum Circuits publication: Optica publication_identifier: eissn: - 2334-2536 publication_status: published publisher: Optica Publishing Group quality_controlled: '1' scopus_import: '1' status: public title: Testing single-photon entanglement using self-referential measurements tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 13 year: '2026' ... --- OA_place: publisher OA_type: hybrid PlanS_conform: '1' _id: '21748' abstract: - lang: eng text: Cells are defined by lipid membranes that differ in their structure across the tree of life. While the membranes of most bacteria and eukaryotes consist of single-headed bilayer lipids, the membranes of archaea are composed of mixtures of single-headed bilayer lipids and double-headed bolalipids. Archaeal bolalipids can adopt straight or u-shaped conformations, enabling them—together with bilayer lipids—to control whether membranes form bilayer or monolayer structures. Yet, the physical principles governing archaeal membranes remain largely unexplored, especially how membrane structure couples to externally imposed curvature during membrane remodeling. Here, we perform coarse-grained molecular dynamics simulations of toroidal vesicles to systematically probe the effects of all relevant combinations of mean and Gaussian curvatures on shape stability and lipid organization. We find that soft bilayer membranes can sustain all curvatures induced, whereas rigid bolalipid monolayer membranes either transition to different vesicle shapes or rupture. Bilayer-mimicking u-shaped bolalipids and bilayer lipids are spatially accumulated in regions of high mean membrane curvature independent of Gaussian curvature. Our work identifies curvature–composition coupling as a physical signature of archaeal membrane remodeling. acknowledgement: F.F. acknowledges the financial support from the NOMIS foundation. M.A. and A.Š. acknowledge the funding from the Volkswagen Foundation (Grant No. Az 96727). A.Š. acknowledges the funding from ERC Starting Grant “NEPA” (Grant No. 802960) and the Vallee Scholarship. article_number: '144902' article_processing_charge: Yes (in subscription journal) article_type: original arxiv: 1 author: - first_name: Felix F full_name: Frey, Felix F id: a0270b37-8f1a-11ec-95c7-8e710c59a4f3 last_name: Frey orcid: 0000-0001-8501-6017 - first_name: Miguel full_name: Santana de Freitas Amaral, Miguel id: 4f2d02dd-47a9-11ec-ad10-82820ed3f501 last_name: Santana de Freitas Amaral - first_name: Anđela full_name: Šarić, Anđela id: bf63d406-f056-11eb-b41d-f263a6566d8b last_name: Šarić orcid: 0000-0002-7854-2139 citation: ama: 'Frey FF, Santana de Freitas Amaral M, Šarić A. Cracking donuts and sorting lipids: Geometry controls archaeal membrane stability and lipid organization. Journal of Chemical Physics. 2026;164(14). doi:10.1063/5.0325170' apa: 'Frey, F. F., Santana de Freitas Amaral, M., & Šarić, A. (2026). Cracking donuts and sorting lipids: Geometry controls archaeal membrane stability and lipid organization. Journal of Chemical Physics. AIP Publishing. https://doi.org/10.1063/5.0325170' chicago: 'Frey, Felix F, Miguel Santana de Freitas Amaral, and Anđela Šarić. “Cracking Donuts and Sorting Lipids: Geometry Controls Archaeal Membrane Stability and Lipid Organization.” Journal of Chemical Physics. AIP Publishing, 2026. https://doi.org/10.1063/5.0325170.' ieee: 'F. F. Frey, M. Santana de Freitas Amaral, and A. Šarić, “Cracking donuts and sorting lipids: Geometry controls archaeal membrane stability and lipid organization,” Journal of Chemical Physics, vol. 164, no. 14. AIP Publishing, 2026.' ista: 'Frey FF, Santana de Freitas Amaral M, Šarić A. 2026. Cracking donuts and sorting lipids: Geometry controls archaeal membrane stability and lipid organization. Journal of Chemical Physics. 164(14), 144902.' mla: 'Frey, Felix F., et al. “Cracking Donuts and Sorting Lipids: Geometry Controls Archaeal Membrane Stability and Lipid Organization.” Journal of Chemical Physics, vol. 164, no. 14, 144902, AIP Publishing, 2026, doi:10.1063/5.0325170.' short: F.F. Frey, M. Santana de Freitas Amaral, A. Šarić, Journal of Chemical Physics 164 (2026). corr_author: '1' date_created: 2026-04-19T22:07:45Z date_published: 2026-04-14T00:00:00Z date_updated: 2026-05-05T12:40:41Z day: '14' ddc: - '540' department: - _id: AnSa doi: 10.1063/5.0325170 ec_funded: 1 external_id: arxiv: - '2603.15170' file: - access_level: open_access checksum: 2e10c4f4531676e0771ef3730e4b63a9 content_type: application/pdf creator: dernst date_created: 2026-05-05T12:35:24Z date_updated: 2026-05-05T12:35:24Z file_id: '21801' file_name: 2026_JourChemPhysics_Frey.pdf file_size: 8764791 relation: main_file success: 1 file_date_updated: 2026-05-05T12:35:24Z has_accepted_license: '1' intvolume: ' 164' issue: '14' language: - iso: eng month: '04' oa: 1 oa_version: Published Version project: - _id: eba2549b-77a9-11ec-83b8-a81e493eae4e call_identifier: H2020 grant_number: '802960' name: 'Non-Equilibrium Protein Assembly: from Building Blocks to Biological Machines' publication: Journal of Chemical Physics publication_identifier: eissn: - 1089-7690 issn: - ' 0021-9606' publication_status: published publisher: AIP Publishing quality_controlled: '1' related_material: record: - id: '21800' relation: research_data status: public scopus_import: '1' status: public title: 'Cracking donuts and sorting lipids: Geometry controls archaeal membrane stability and lipid organization' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 164 year: '2026' ... --- OA_place: repository OA_type: green _id: '21749' abstract: - lang: eng text: The collagen triple helix assembles hierarchically into bundled oligomers, solvated networks, and fibers. Synthetic peptide assemblies, driven by supramolecular interactions, can form single triple helices through intrahelical amino acid pairs; however, the principles guiding interhelical associations into higher-order structures remain unclear. Here, we incorporate cation−π and electrostatic charge pairs to probe interhelical interactions and elucidate the mechanisms driving triple helix assembly into fibrils, nanotubes, and nanosheets. Introducing cation−π pairs into a fibrillating collagen mimetic resulted in D-periodic fibrils with pH-sensitive gelation. By alternating the presentation of electrostatic and cation−π pairs, the assembly of another D-periodic fibril featuring inner and outer triple-helical layers was resolved by cryo electron microscopy to a resolution of 8 Å. At physiological pH, antiparallel association of these triple helices leads to the formation of nanotubes. The packing behavior of triple helices correlates with the interhelical interactions, where parallel associations favor fibril formation and antiparallel interactions drive nanotube and nanosheet assembly. These self-assembling triple-helical peptides demonstrate how packing of higher-order structures can be tailored with supramolecular interactions and establish the relationship of different hierarchical collagen-mimetic assemblies as pH-dependent. acknowledgement: The authors acknowledge Crispin Hetherington and L. Tracy Yu for their technical assistance and insights. This work was funded in part by the National Science Foundation (CHE 2203937), the National Science Foundation Graduate Research Fellowship (Grant No. 1842494), the Welch Foundation (C-2141), the Swedish Research Council (2020-04633), and the NIH (GM122510). This work benefited from using the SasView application, originally developed under NSF award DMR-0520547. SasView contains code developed with funding from the European Union’s Horizon 2020 research and innovation program under the SINE2020 project, Grant Agreement No. 654000. This work was partly done using the Shared Equipment Authority resources at Rice University. article_processing_charge: No article_type: original author: - first_name: Carson C. full_name: Cole, Carson C. last_name: Cole - first_name: Mark A.B. full_name: Kreutzberger, Mark A.B. last_name: Kreutzberger - first_name: Kevin full_name: Klein, Kevin id: 1e7ede04-9e54-11f0-9ec4-8d4d5563c398 last_name: Klein - first_name: Kiana A. full_name: Cahue, Kiana A. last_name: Cahue - first_name: Brett H. full_name: Pogostin, Brett H. last_name: Pogostin - first_name: Adam C. full_name: Farsheed, Adam C. last_name: Farsheed - first_name: Joseph W.R. full_name: Swain, Joseph W.R. last_name: Swain - first_name: Thi H. full_name: Bui, Thi H. last_name: Bui - first_name: Arghadip full_name: Dey, Arghadip last_name: Dey - first_name: Jonathan T. full_name: Makhoul, Jonathan T. last_name: Makhoul - first_name: Marija full_name: Dubackic, Marija last_name: Dubackic - first_name: Antara full_name: Pal, Antara last_name: Pal - first_name: Ulf full_name: Olsson, Ulf last_name: Olsson - first_name: Anđela full_name: Šarić, Anđela id: bf63d406-f056-11eb-b41d-f263a6566d8b last_name: Šarić orcid: 0000-0002-7854-2139 - first_name: Edward H. full_name: Egelman, Edward H. last_name: Egelman - first_name: Jeffrey D. full_name: Hartgerink, Jeffrey D. last_name: Hartgerink citation: ama: Cole CC, Kreutzberger MAB, Klein K, et al. Supramolecular assembly of collagen-mimetic eptide D-periodic fibrils and nanoassemblies. Biomacromolecules. 2026;27(4):2956-2965. doi:10.1021/acs.biomac.6c00345 apa: Cole, C. C., Kreutzberger, M. A. B., Klein, K., Cahue, K. A., Pogostin, B. H., Farsheed, A. C., … Hartgerink, J. D. (2026). Supramolecular assembly of collagen-mimetic eptide D-periodic fibrils and nanoassemblies. Biomacromolecules. American Chemical Society. https://doi.org/10.1021/acs.biomac.6c00345 chicago: Cole, Carson C., Mark A.B. Kreutzberger, Kevin Klein, Kiana A. Cahue, Brett H. Pogostin, Adam C. Farsheed, Joseph W.R. Swain, et al. “Supramolecular Assembly of Collagen-Mimetic Eptide D-Periodic Fibrils and Nanoassemblies.” Biomacromolecules. American Chemical Society, 2026. https://doi.org/10.1021/acs.biomac.6c00345. ieee: C. C. Cole et al., “Supramolecular assembly of collagen-mimetic eptide D-periodic fibrils and nanoassemblies,” Biomacromolecules, vol. 27, no. 4. American Chemical Society, pp. 2956–2965, 2026. ista: Cole CC, Kreutzberger MAB, Klein K, Cahue KA, Pogostin BH, Farsheed AC, Swain JWR, Bui TH, Dey A, Makhoul JT, Dubackic M, Pal A, Olsson U, Šarić A, Egelman EH, Hartgerink JD. 2026. Supramolecular assembly of collagen-mimetic eptide D-periodic fibrils and nanoassemblies. Biomacromolecules. 27(4), 2956–2965. mla: Cole, Carson C., et al. “Supramolecular Assembly of Collagen-Mimetic Eptide D-Periodic Fibrils and Nanoassemblies.” Biomacromolecules, vol. 27, no. 4, American Chemical Society, 2026, pp. 2956–65, doi:10.1021/acs.biomac.6c00345. short: C.C. Cole, M.A.B. Kreutzberger, K. Klein, K.A. Cahue, B.H. Pogostin, A.C. Farsheed, J.W.R. Swain, T.H. Bui, A. Dey, J.T. Makhoul, M. Dubackic, A. Pal, U. Olsson, A. Šarić, E.H. Egelman, J.D. Hartgerink, Biomacromolecules 27 (2026) 2956–2965. date_created: 2026-04-19T22:07:46Z date_published: 2026-04-13T00:00:00Z date_updated: 2026-05-06T05:43:44Z day: '13' department: - _id: AnSa doi: 10.1021/acs.biomac.6c00345 intvolume: ' 27' issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1101/2025.02.15.637692 month: '04' oa: 1 oa_version: Preprint page: 2956-2965 publication: Biomacromolecules publication_identifier: eissn: - 1526-4602 publication_status: published publisher: American Chemical Society quality_controlled: '1' scopus_import: '1' status: public title: Supramolecular assembly of collagen-mimetic eptide D-periodic fibrils and nanoassemblies type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 27 year: '2026' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold _id: '21750' abstract: - lang: eng text: Liquid-like superionic conductors, with highly mobile ions in a rigid framework, offer intrinsically low lattice thermal conductivity without compromising electronic transport. Argyrodite-type Ag8SnSe6 exhibits a melt-like Ag sublattice that drives lattice thermal conductivity (κL) below 0.2 watts per meter per kelvin, yet its low carrier concentration limits the power factor. Here, interstitial Ag atoms raise the Fermi level into the conduction band, substantially increasing the electron concentration. Simultaneously, the formation of a secondary Ag2Se phase generates lattice distortions that enhance phonon scattering. A pronounced mismatch between electronic (~200 nanometers) and phononic (~0.22 nanometers) mean free paths decouples charge and heat transport, enabling concurrent suppression of κL and retention of high electrical conductivity. This coupled electronic-phononic modulation yields a record ZT of 0.72 at ambient temperature and a peak ZT of 1.1 at 735 kelvins, with an average ZTavg of 0.72 over 320 to 735 kelvins. A unicouple device achieves 6.3% efficiency under a 357-kelvin gradient, highlighting a practical strategy for high-performance midtemperature thermoelectrics. acknowledged_ssus: - _id: LifeSc acknowledgement: The Scientific Service Units (SSU) of ISTA supported this research through resources provided by the Lab Support Facility (LSF). This work was supported by the National Key R&D Program of China grant 2024YFE0105200 (to C.S.), National Natural Science Foundation of China grant 12504038 (to M.L.), China Postdoctoral Science Foundation grant 2023M743151 (to M.L.), Natural Science Foundation of Henan Province grant 252300421763 (to M.L.), Key Scientific Research Project of Higher Education Institutions in Henan Province grant 25A140004 (to M.L.), National Natural Science Foundation of China grant 12204156 (to D.W.), China Postdoctoral Science Foundation grant 2023TQ0315 and 2023 M743224 (to D.W.), Generalitat de Catalunya grant 2021SGR00457 (to J.A.), and European Regional Development Fund grants ENE2016-77798-C4-3-R, PID2020-116093RB-C43, and AEI/10.13039/501100011033 (to A.C.). This work also was financially supported by ISTA and the Werner Siemens Foundation (to M.I.). article_number: eaec9073 article_processing_charge: Yes article_type: original author: - first_name: Mengyao full_name: Li, Mengyao last_name: Li - first_name: Xueke full_name: Zhao, Xueke last_name: Zhao - first_name: Yu full_name: Zhang, Yu last_name: Zhang - first_name: Jing full_name: Yu, Jing last_name: Yu - first_name: Xuyang full_name: Liu, Xuyang last_name: Liu - first_name: Mochen full_name: Jia, Mochen last_name: Jia - first_name: Hongzhang full_name: Song, Hongzhang last_name: Song - first_name: Dongyang full_name: Wang, Dongyang last_name: Wang - first_name: Jordi full_name: Arbiol, Jordi last_name: Arbiol - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 - first_name: Chongxin full_name: Shan, Chongxin last_name: Shan - first_name: Andreu full_name: Cabot, Andreu last_name: Cabot - first_name: Ziyu full_name: Wang, Ziyu last_name: Wang citation: ama: Li M, Zhao X, Zhang Y, et al. Electronic-phononic decoupling and Fermi-level tuning enable high thermoelectric performance in Ag8SnSe6. Science Advances. 2026;12(15). doi:10.1126/sciadv.aec9073 apa: Li, M., Zhao, X., Zhang, Y., Yu, J., Liu, X., Jia, M., … Wang, Z. (2026). Electronic-phononic decoupling and Fermi-level tuning enable high thermoelectric performance in Ag8SnSe6. Science Advances. AAAS. https://doi.org/10.1126/sciadv.aec9073 chicago: Li, Mengyao, Xueke Zhao, Yu Zhang, Jing Yu, Xuyang Liu, Mochen Jia, Hongzhang Song, et al. “Electronic-Phononic Decoupling and Fermi-Level Tuning Enable High Thermoelectric Performance in Ag8SnSe6.” Science Advances. AAAS, 2026. https://doi.org/10.1126/sciadv.aec9073. ieee: M. Li et al., “Electronic-phononic decoupling and Fermi-level tuning enable high thermoelectric performance in Ag8SnSe6,” Science Advances, vol. 12, no. 15. AAAS, 2026. ista: Li M, Zhao X, Zhang Y, Yu J, Liu X, Jia M, Song H, Wang D, Arbiol J, Ibáñez M, Shan C, Cabot A, Wang Z. 2026. Electronic-phononic decoupling and Fermi-level tuning enable high thermoelectric performance in Ag8SnSe6. Science Advances. 12(15), eaec9073. mla: Li, Mengyao, et al. “Electronic-Phononic Decoupling and Fermi-Level Tuning Enable High Thermoelectric Performance in Ag8SnSe6.” Science Advances, vol. 12, no. 15, eaec9073, AAAS, 2026, doi:10.1126/sciadv.aec9073. short: M. Li, X. Zhao, Y. Zhang, J. Yu, X. Liu, M. Jia, H. Song, D. Wang, J. Arbiol, M. Ibáñez, C. Shan, A. Cabot, Z. Wang, Science Advances 12 (2026). date_created: 2026-04-19T22:07:47Z date_published: 2026-04-10T00:00:00Z date_updated: 2026-05-06T06:08:27Z day: '10' ddc: - '530' department: - _id: MaIb doi: 10.1126/sciadv.aec9073 external_id: pmid: - '41961944' file: - access_level: open_access checksum: 9bd4546a23f218972f83164fb21003e1 content_type: application/pdf creator: dernst date_created: 2026-05-06T06:06:26Z date_updated: 2026-05-06T06:06:26Z file_id: '21802' file_name: 2026_ScienceAdv_Li.pdf file_size: 3727993 relation: main_file success: 1 file_date_updated: 2026-05-06T06:06:26Z has_accepted_license: '1' intvolume: ' 12' issue: '15' language: - iso: eng month: '04' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 9B8F7476-BA93-11EA-9121-9846C619BF3A name: 'HighTE: The Werner Siemens Laboratory for the High Throughput Discovery of Semiconductors for Waste Heat Recovery' publication: Science Advances publication_identifier: eissn: - 2375-2548 publication_status: published publisher: AAAS quality_controlled: '1' scopus_import: '1' status: public title: Electronic-phononic decoupling and Fermi-level tuning enable high thermoelectric performance in Ag8SnSe6 tmp: image: /images/cc_by_nc.png legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) short: CC BY-NC (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 12 year: '2026' ... --- OA_place: publisher OA_type: hybrid PlanS_conform: '1' _id: '21751' abstract: - lang: eng text: 'We define a certain class of simple varieties over a field k by a constructive recipe and show how to control their (equivariant) truncating invariants. Consequently, we prove that on simple varieties: (i) if k = k and char k = p, the p-adic cyclotomic trace is an equivalence; (ii) if k = Q, the Goodwillie–Jones trace is an isomorphism in degree zero; (iii) we can control homotopy invariant K-theory KH, which is equivariantly formal and determined by its topological counterparts. Simple varieties are quite special, but encompass important singular examples appearing in geometric representation theory. We, in particular, show that both finite and affine Schubert varieties for GLn lie in this class, so all the above results hold for them. ' acknowledgement: "This work was supported by a DOC Fellowship of the Austrian Academy of Sciences at the Institute of Science and Technology Austria (ISTA) and by an Erasmus+ staff mobility training. It took place during the author’s visit to Laboratoire de Mathématiques d’Orsay in the course of his PhD at the Institute of Science and Technology Austria. First and foremost, I would like to thank Matthew Morrow for discussions, explanations and ideas without which this work would not have been carried out. I would further like to thank Brian Conrad for providing an amazing reference on projective cones in appropriate generality, to Vova Sosnilo for carefully discussing – among other things – the derived nilinvariance for quotients by any linearly reductive group, and to Adeel Khan, Timo Richarz, Matthias Wendt and Xinwen Zhu for helpful conversations\r\nabout the results. I would moreover like to thank the referee for the very useful comments." article_number: rnag058 article_processing_charge: Yes (via OA deal) article_type: original arxiv: 1 author: - first_name: Jakub full_name: Löwit, Jakub id: e3b80ae2-eb8e-11eb-b029-9aef4a9108a0 last_name: Löwit citation: ama: Löwit J. Equivariant localizing invariants of simple varieties. International Mathematics Research Notices. 2026;2026(7). doi:10.1093/imrn/rnag058 apa: Löwit, J. (2026). Equivariant localizing invariants of simple varieties. International Mathematics Research Notices. Oxford University Press. https://doi.org/10.1093/imrn/rnag058 chicago: Löwit, Jakub. “Equivariant Localizing Invariants of Simple Varieties.” International Mathematics Research Notices. Oxford University Press, 2026. https://doi.org/10.1093/imrn/rnag058. ieee: J. Löwit, “Equivariant localizing invariants of simple varieties,” International Mathematics Research Notices, vol. 2026, no. 7. Oxford University Press, 2026. ista: Löwit J. 2026. Equivariant localizing invariants of simple varieties. International Mathematics Research Notices. 2026(7), rnag058. mla: Löwit, Jakub. “Equivariant Localizing Invariants of Simple Varieties.” International Mathematics Research Notices, vol. 2026, no. 7, rnag058, Oxford University Press, 2026, doi:10.1093/imrn/rnag058. short: J. Löwit, International Mathematics Research Notices 2026 (2026). corr_author: '1' date_created: 2026-04-19T22:07:48Z date_published: 2026-04-01T00:00:00Z date_updated: 2026-05-06T06:36:25Z day: '01' ddc: - '510' department: - _id: TaHa doi: 10.1093/imrn/rnag058 external_id: arxiv: - '2507.09392' file: - access_level: open_access checksum: 306f4567b7b2dcf38e23f7b55a27514e content_type: application/pdf creator: dernst date_created: 2026-05-06T06:35:05Z date_updated: 2026-05-06T06:35:05Z file_id: '21803' file_name: 2026_IMRN_Loewit.pdf file_size: 1663246 relation: main_file success: 1 file_date_updated: 2026-05-06T06:35:05Z has_accepted_license: '1' intvolume: ' 2026' issue: '7' language: - iso: eng month: '04' oa: 1 oa_version: Published Version project: - _id: 901e2a43-16d5-11f0-9cad-9cead34748d6 grant_number: '27004' name: Arithmetic, geometry, topology and representation theory arising from the affine Grassmannian publication: International Mathematics Research Notices publication_identifier: eissn: - 1687-0247 issn: - 1073-7928 publication_status: published publisher: Oxford University Press quality_controlled: '1' scopus_import: '1' status: public title: Equivariant localizing invariants of simple varieties tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2026 year: '2026' ... --- OA_place: publisher OA_type: hybrid PlanS_conform: '1' _id: '21752' abstract: - lang: eng text: Epithelial tissues function as multicellular communities that preserve tissue integrity while adapting to diverse environmental stresses by altering cell behaviors. A striking manifestation of such adaptability is cell plasticity, the ability of differentiated cells to revert to stem-like states or adopt alternative fates. Once considered rare and confined to highly regenerative species, cell plasticity is now recognized across the metazoan tree. In early-branching animals such as sponges and cnidarians, transdifferentiation and dedifferentiation are integral to life-cycle transitions and regeneration, whereas in more complex organisms, these processes typically emerge under stress, including stem cell loss or environmental perturbations. Here, we examine epithelial cell plasticity through evolutionary, cellular, and molecular perspectives. Focusing on the intestinal epithelium, we explore findings from mammalian and Drosophila models showing that progenitors and even terminally differentiated cells can dedifferentiate in response to external stimuli that disrupt homeostasis, such as pathogen infection and nutrient fluctuations. We further discuss conserved mechanisms involving intercellular signaling (e.g., Notch, EGFR, and JAK-STAT) and chromatin states primed for reprogramming, modulated by metabolic cues. Together, these insights position cell plasticity as an ancient environmental adaptation strategy, shaped by conserved molecular toolkits and refined by species- and cell lineage-specific innovations. acknowledgement: This work was supported by JSPS/MEXT KAKENHI (grant numbers JP22J01430 to H.N., JP23H04696, JP23K24025, JP25H02543, JP25K02406 to Y.N.), JST FOREST Program JPMJFR233E (Y.N.), The Cell Science Research Foundation (Y.N.), and Takeda Science Foundation (Y.N.). article_number: '103670' article_processing_charge: Yes (in subscription journal) article_type: review author: - first_name: Hiroki full_name: Nagai, Hiroki id: 608df3e6-e2ab-11ed-8890-c9318cec7da4 last_name: Nagai orcid: 0000-0003-1671-9434 - first_name: Yu Ichiro full_name: Nakajima, Yu Ichiro last_name: Nakajima citation: ama: 'NAGAI H, Nakajima YI. Epithelial cell plasticity in metazoans: Evolutionary insights into roles and mechanisms. Seminars in Cell and Developmental Biology. 2026;179-180. doi:10.1016/j.semcdb.2026.103670' apa: 'NAGAI, H., & Nakajima, Y. I. (2026). Epithelial cell plasticity in metazoans: Evolutionary insights into roles and mechanisms. Seminars in Cell and Developmental Biology. Elsevier. https://doi.org/10.1016/j.semcdb.2026.103670' chicago: 'NAGAI, HIROKI, and Yu Ichiro Nakajima. “Epithelial Cell Plasticity in Metazoans: Evolutionary Insights into Roles and Mechanisms.” Seminars in Cell and Developmental Biology. Elsevier, 2026. https://doi.org/10.1016/j.semcdb.2026.103670.' ieee: 'H. NAGAI and Y. I. Nakajima, “Epithelial cell plasticity in metazoans: Evolutionary insights into roles and mechanisms,” Seminars in Cell and Developmental Biology, vol. 179–180. Elsevier, 2026.' ista: 'NAGAI H, Nakajima YI. 2026. Epithelial cell plasticity in metazoans: Evolutionary insights into roles and mechanisms. Seminars in Cell and Developmental Biology. 179–180, 103670.' mla: 'NAGAI, HIROKI, and Yu Ichiro Nakajima. “Epithelial Cell Plasticity in Metazoans: Evolutionary Insights into Roles and Mechanisms.” Seminars in Cell and Developmental Biology, vol. 179–180, 103670, Elsevier, 2026, doi:10.1016/j.semcdb.2026.103670.' short: H. NAGAI, Y.I. Nakajima, Seminars in Cell and Developmental Biology 179–180 (2026). corr_author: '1' date_created: 2026-04-19T22:07:49Z date_published: 2026-05-01T00:00:00Z date_updated: 2026-04-28T14:11:13Z day: '01' ddc: - '570' department: - _id: XiFe doi: 10.1016/j.semcdb.2026.103670 file: - access_level: open_access checksum: 0a0929a045d0cbd964297768833c14ae content_type: application/pdf creator: dernst date_created: 2026-04-28T13:58:47Z date_updated: 2026-04-28T13:58:47Z file_id: '21775' file_name: 2026_SeminarsCellDevBiology_Nagai.pdf file_size: 1306613 relation: main_file success: 1 file_date_updated: 2026-04-28T13:58:47Z has_accepted_license: '1' language: - iso: eng month: '05' oa: 1 oa_version: Published Version publication: Seminars in Cell and Developmental Biology publication_identifier: eissn: - 1096-3634 issn: - 1084-9521 publication_status: published publisher: Elsevier quality_controlled: '1' scopus_import: '1' status: public title: 'Epithelial cell plasticity in metazoans: Evolutionary insights into roles and mechanisms' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 179-180 year: '2026' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '21755' abstract: - lang: eng text: Tropical shallow clouds are a major source of uncertainty in Earth's climate sensitivity, especially through their spatial arrangement, which global climate models do not represent. Efforts to understand their organization have partly relied on classifying observed scenes, identifying four patterns as archetypal regimes. Here we analyze geostationary satellite imagery of the western tropical Atlantic using the L‐function, a tool based on point pattern theory that quantifies cloud organization across spatial scales. Classical examples of the four patterns show distinct L‐function fingerprints, revealing their characteristic clustering and regularity scales and aiding physical interpretation. Yet, when evaluating many scenes at fixed spatial scales, the L‐function distribution lacks the distinct modes expected from discrete regimes. This is corroborated by analyses of other organization indices employing diverse approaches, from inter‐cloud nearest‐neighbor distances to fractal analysis. Implications for the parameterization of mesoscale cloud organization in climate models are discussed. acknowledgement: GB was supported by an ICTP Postdoctoral Research Fellowship Agreement. GM was supported by the CNRS. AC was supported by the European Union's Horizon 2020 research and innovation programme Marie Sklodowska-Curie Grant agreement No 101034413. LJF acknowledges funding from the NERC Doctoral Training Partnership in Environmental Research Grant NE/S007474/1. We thank three anonymous reviewers and Jiawei Bao for their insightful comments, which greatly improved this manuscript. article_number: e2025GL119921 article_processing_charge: Yes article_type: original author: - first_name: Giovanni full_name: Biagioli, Giovanni last_name: Biagioli - first_name: Giulio full_name: Mandorli, Giulio last_name: Mandorli - first_name: Lilli Johanna full_name: Freischem, Lilli Johanna last_name: Freischem - first_name: Alejandro full_name: Casallas Garcia, Alejandro id: 92081129-2d75-11ef-a48d-b04dd7a2385a last_name: Casallas Garcia orcid: 0000-0002-1988-5035 - first_name: Adrian Mark full_name: Tompkins, Adrian Mark last_name: Tompkins citation: ama: 'Biagioli G, Mandorli G, Freischem LJ, Casallas Garcia A, Tompkins AM. Spatial patterns of shallow clouds: Challenging the concept of defined regimes. Geophysical Research Letters. 2026;53(8). doi:10.1029/2025gl119921' apa: 'Biagioli, G., Mandorli, G., Freischem, L. J., Casallas Garcia, A., & Tompkins, A. M. (2026). Spatial patterns of shallow clouds: Challenging the concept of defined regimes. Geophysical Research Letters. Wiley. https://doi.org/10.1029/2025gl119921' chicago: 'Biagioli, Giovanni, Giulio Mandorli, Lilli Johanna Freischem, Alejandro Casallas Garcia, and Adrian Mark Tompkins. “Spatial Patterns of Shallow Clouds: Challenging the Concept of Defined Regimes.” Geophysical Research Letters. Wiley, 2026. https://doi.org/10.1029/2025gl119921.' ieee: 'G. Biagioli, G. Mandorli, L. J. Freischem, A. Casallas Garcia, and A. M. Tompkins, “Spatial patterns of shallow clouds: Challenging the concept of defined regimes,” Geophysical Research Letters, vol. 53, no. 8. Wiley, 2026.' ista: 'Biagioli G, Mandorli G, Freischem LJ, Casallas Garcia A, Tompkins AM. 2026. Spatial patterns of shallow clouds: Challenging the concept of defined regimes. Geophysical Research Letters. 53(8), e2025GL119921.' mla: 'Biagioli, Giovanni, et al. “Spatial Patterns of Shallow Clouds: Challenging the Concept of Defined Regimes.” Geophysical Research Letters, vol. 53, no. 8, e2025GL119921, Wiley, 2026, doi:10.1029/2025gl119921.' short: G. Biagioli, G. Mandorli, L.J. Freischem, A. Casallas Garcia, A.M. Tompkins, Geophysical Research Letters 53 (2026). date_created: 2026-04-21T06:04:41Z date_published: 2026-04-28T00:00:00Z date_updated: 2026-04-28T13:35:53Z day: '28' ddc: - '550' department: - _id: CaMu doi: 10.1029/2025gl119921 ec_funded: 1 file: - access_level: open_access checksum: 2cd4ae120b14b244f5b2f50eaae0efc1 content_type: application/pdf creator: acasalla date_created: 2026-04-21T06:07:22Z date_updated: 2026-04-21T06:07:22Z file_id: '21756' file_name: Gio_Casallas_2026.pdf file_size: 1544417 relation: main_file success: 1 file_date_updated: 2026-04-21T06:07:22Z has_accepted_license: '1' intvolume: ' 53' issue: '8' language: - iso: eng month: '04' oa: 1 oa_version: Published Version project: - _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c call_identifier: H2020 grant_number: '101034413' name: 'IST-BRIDGE: International postdoctoral program' publication: Geophysical Research Letters publication_identifier: eissn: - 1944-8007 issn: - 0094-8276 publication_status: published publisher: Wiley quality_controlled: '1' scopus_import: '1' status: public title: 'Spatial patterns of shallow clouds: Challenging the concept of defined regimes' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 53 year: '2026' ... --- DOAJ_listed: '1' OA_place: publisher OA_type: gold PlanS_conform: '1' _id: '21760' abstract: - lang: eng text: 3I/ATLAS is the third interstellar object discovered to date, following 1I/‘Oumuamua and 2I/Borisov. Its unusually high excess velocity and active cometary nature make it a key probe of the Galactic population of icy planetesimals. Understanding its origin requires its past trajectory through the Galaxy to be traced and the possible role of stellar encounters to be assessed, both as a potential origin and a perturber to its orbit. We integrated the orbit of 3I/ATLAS backward in time for 10 Myr, together with a sample of Gaia DR3 stars with high-quality astrometry and radial velocities, to identify close passages within 2 pc. We identify 93 nominal encounters, 62 of which are significant at the 2σ level. However, none of these encounters produced any meaningful perturbation. The strongest perturber Gaia DR3 6863591389529611264 at 0.30 pc and with a relative velocity of 35 km s−1, imparted only a velocity change of ∣Δv∣ ≃ 5 × 10−4 km s−1 to the orbit of 3I/ATLAS. Our results indicate that no stellar flybys within the past 10 Myr and 500 pc contained in Gaia DR3 can account for the present trajectory of 3I/ATLAS or be associated with its origin. We further show that 3I/ATLAS is kinematically consistent with a thin-disk population, despite its large peculiar velocity. acknowledgement: We thank the anonymous referee for a careful reading of the manuscript and for constructive comments that improved the paper. X.P.C. and S.T. thank J.L. Gragera-Más and Ylva Götberg for their valuable feedback and comments. X.P.C. acknowledges financial support from the Spanish National Programme for the Promotion of Talent and its Employability grant PRE2022-104959 cofunded by the European Social Fund. S.T. acknowledges the funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No. 101034413. E.V. acknowledges support from the DISCOBOLO project funded by the Spanish Ministerio de Ciencia, Innovación y Universidades under grant PID2021-127289NB-I00. A.J.M. acknowledges support from the Swedish National Space Agency (Career grant 2023-00146). X.P.C. and M.M. acknowledge support from the Spanish Ministerio de Ciencia, Innovaciòn y Universidades under grants PID2021122842OB-C22 and PID2024-157964OB-C22; from the Xunta de Galicia and the European Union (FEDER Galicia 2021-2027 Program) Ref. ED431B 2024/21, ED431B 2024/02, and CITIC ED431G 2023/01. This work has made use of data from the European Space Agency (ESA) Gaia mission and processed by the Gaia Data Processing and Analysis Consortium (DPAC). Funding for the DPAC has been provided by national institutions, particularly the institutions participating in the Gaia Multilateral Agreement. article_number: '146' article_processing_charge: Yes article_type: original arxiv: 1 author: - first_name: X. full_name: Pérez-Couto, X. last_name: Pérez-Couto - first_name: Santiago full_name: Torres Rodriguez, Santiago id: a8df4360-4328-11ee-8f1a-e502d0c83fc2 last_name: Torres Rodriguez orcid: 0000-0002-3150-8988 - first_name: E. full_name: Villaver, E. last_name: Villaver - first_name: A. J. full_name: Mustill, A. J. last_name: Mustill - first_name: M. full_name: Manteiga, M. last_name: Manteiga citation: ama: 'Pérez-Couto X, Torres Rodriguez S, Villaver E, Mustill AJ, Manteiga M. 3I/ATLAS: In search of the witnesses to its voyage. The Astrophysical Journal. 2026;1001(2). doi:10.3847/1538-4357/ae56ff' apa: 'Pérez-Couto, X., Torres Rodriguez, S., Villaver, E., Mustill, A. J., & Manteiga, M. (2026). 3I/ATLAS: In search of the witnesses to its voyage. The Astrophysical Journal. IOP Publishing. https://doi.org/10.3847/1538-4357/ae56ff' chicago: 'Pérez-Couto, X., Santiago Torres Rodriguez, E. Villaver, A. J. Mustill, and M. Manteiga. “3I/ATLAS: In Search of the Witnesses to Its Voyage.” The Astrophysical Journal. IOP Publishing, 2026. https://doi.org/10.3847/1538-4357/ae56ff.' ieee: 'X. Pérez-Couto, S. Torres Rodriguez, E. Villaver, A. J. Mustill, and M. Manteiga, “3I/ATLAS: In search of the witnesses to its voyage,” The Astrophysical Journal, vol. 1001, no. 2. IOP Publishing, 2026.' ista: 'Pérez-Couto X, Torres Rodriguez S, Villaver E, Mustill AJ, Manteiga M. 2026. 3I/ATLAS: In search of the witnesses to its voyage. The Astrophysical Journal. 1001(2), 146.' mla: 'Pérez-Couto, X., et al. “3I/ATLAS: In Search of the Witnesses to Its Voyage.” The Astrophysical Journal, vol. 1001, no. 2, 146, IOP Publishing, 2026, doi:10.3847/1538-4357/ae56ff.' short: X. Pérez-Couto, S. Torres Rodriguez, E. Villaver, A.J. Mustill, M. Manteiga, The Astrophysical Journal 1001 (2026). date_created: 2026-04-26T22:01:46Z date_published: 2026-04-20T00:00:00Z date_updated: 2026-04-28T13:08:39Z day: '20' ddc: - '520' department: - _id: LiBu doi: 10.3847/1538-4357/ae56ff ec_funded: 1 external_id: arxiv: - '2509.07678' file: - access_level: open_access checksum: c3daf49261a9933c079854c38eec316f content_type: application/pdf creator: dernst date_created: 2026-04-28T13:06:00Z date_updated: 2026-04-28T13:06:00Z file_id: '21773' file_name: 2026_AstrophysicalJournal_PerezCouto.pdf file_size: 2905627 relation: main_file success: 1 file_date_updated: 2026-04-28T13:06:00Z has_accepted_license: '1' intvolume: ' 1001' issue: '2' language: - iso: eng month: '04' oa: 1 oa_version: Published Version project: - _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c call_identifier: H2020 grant_number: '101034413' name: 'IST-BRIDGE: International postdoctoral program' publication: The Astrophysical Journal publication_identifier: eissn: - 1538-4357 issn: - 0004-637X publication_status: published publisher: IOP Publishing quality_controlled: '1' scopus_import: '1' status: public title: '3I/ATLAS: In search of the witnesses to its voyage' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 1001 year: '2026' ...