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Wang, Advances in Mathematics 475 (2025).","mla":"Wang, Victor. “Asymptotic Growth of Translation-Dilation Orbits.” <i>Advances in Mathematics</i>, vol. 475, 110341, Elsevier, 2025, doi:<a href=\"https://doi.org/10.1016/j.aim.2025.110341\">10.1016/j.aim.2025.110341</a>."},"volume":475,"external_id":{"arxiv":["2309.07626"],"isi":["001495142300002"]},"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","month":"07","department":[{"_id":"TiBr"}],"day":"01","article_type":"original","has_accepted_license":"1","status":"public","ec_funded":1,"publisher":"Elsevier","file":[{"date_updated":"2025-12-30T08:30:17Z","content_type":"application/pdf","date_created":"2025-12-30T08:30:17Z","file_id":"20895","checksum":"01f2589b678ba840d6a4066c1d8d7642","access_level":"open_access","file_size":1592341,"creator":"dernst","file_name":"2025_AdvMathematics_Wang.pdf","relation":"main_file","success":1}],"scopus_import":"1","tmp":{"short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png"},"article_number":"110341","oa_version":"Published Version","file_date_updated":"2025-12-30T08:30:17Z","OA_type":"hybrid","year":"2025","quality_controlled":"1","project":[{"call_identifier":"H2020","_id":"fc2ed2f7-9c52-11eb-aca3-c01059dda49c","name":"IST-BRIDGE: International postdoctoral program","grant_number":"101034413"}],"author":[{"first_name":"Victor","orcid":"0000-0002-0704-7026","last_name":"Wang","id":"76096395-aea4-11ed-a680-ab8ebbd3f1b9","full_name":"Wang, Victor"}],"isi":1,"OA_place":"publisher","language":[{"iso":"eng"}],"oa":1,"publication_status":"published","publication":"Advances in Mathematics","acknowledgement":"I thank Yuri Tschinkel for introducing me to the beautiful paper [53] and associated open questions, and thank him as well as Ramin Takloo-Bighash and Sho Tanimoto for their encouragement and comments. Also, I thank Tim Browning and Dan Loughran for comments and suggestions concerning Manin–Peyre, homogeneous spaces, and splitness. Thanks also to Anshul Adve, Peter Sarnak, Philip Tosteson, Katy Woo, and Nina Zubrilina for some interesting discussions. I thank the Browning Group and Andy O'Desky for many conversations. This project has received funding from the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 101034413. Finally, I thank the editors and referees for their detailed input, which substantially improved the paper.","abstract":[{"text":"By studying some Clausen-like multiple Dirichlet series, we complete the proof of Manin's conjecture for sufficiently split smooth equivariant compactifications of the translation-dilation group over the rationals. Secondary terms remain elusive in general.","lang":"eng"}],"title":"Asymptotic growth of translation-dilation orbits","date_published":"2025-07-01T00:00:00Z","date_updated":"2026-07-16T10:45:31Z","publication_identifier":{"issn":["0001-8708"],"eissn":["1090-2082"]},"doi":"10.1016/j.aim.2025.110341","researchdata_availability":"no","intvolume":"       475","PlanS_conform":"1","corr_author":"1","ddc":["510"],"_id":"19727","das_tickbox":"0","article_processing_charge":"Yes (via OA deal)","arxiv":1,"type":"journal_article","supplementarymaterial":"no","date_created":"2025-05-25T22:16:41Z"},{"article_type":"original","day":"23","has_accepted_license":"1","scopus_import":"1","file":[{"date_updated":"2025-05-12T10:23:26Z","date_created":"2025-05-12T10:23:26Z","content_type":"application/pdf","access_level":"open_access","file_size":1094167,"file_id":"19682","checksum":"f9a1057d146632890466a7dc33bf625e","file_name":"2025_JAMR_Wang.pdf","creator":"dernst","success":1,"relation":"main_file"}],"publisher":"Association for Mathematical Research","ec_funded":1,"status":"public","tmp":{"short":"CC BY-NC (4.0)","image":"/images/cc_by_nc.png","name":"Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)","legal_code_url":"https://creativecommons.org/licenses/by-nc/4.0/legalcode"},"citation":{"apa":"Wang, V. 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Wang, Journal of the Association for Mathematical Research 3 (2025) 1–26."},"volume":3,"external_id":{"arxiv":["2304.08674"]},"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","month":"01","department":[{"_id":"TiBr"}],"author":[{"last_name":"Wang","orcid":"0000-0002-0704-7026","first_name":"Victor","full_name":"Wang, Victor","id":"76096395-aea4-11ed-a680-ab8ebbd3f1b9"}],"project":[{"call_identifier":"H2020","grant_number":"101034413","name":"IST-BRIDGE: International postdoctoral program","_id":"fc2ed2f7-9c52-11eb-aca3-c01059dda49c"}],"oa_version":"Published Version","file_date_updated":"2025-05-12T10:23:26Z","OA_type":"diamond","year":"2025","quality_controlled":"1","abstract":[{"lang":"eng","text":"We show that almost all primes p =\\= ± 4 mod9 are sums of three cubes, assuming a conjecture due to Hooley, Manin, et al. on cubic fourfolds. This conjecture is approachable under standard statistical hypotheses on geometric families of L-functions."}],"title":"Prime Hasse principles via diophantine second moments","date_published":"2025-01-23T00:00:00Z","date_updated":"2026-07-16T09:41:30Z","publication_identifier":{"eissn":["2998-4114"]},"doi":"10.56994/JAMR.003.001.001","OA_place":"publisher","language":[{"iso":"eng"}],"oa":1,"publication":"Journal of the Association for Mathematical Research","publication_status":"published","acknowledgement":"This work was partially supported by the European Union’s Horizon 2020 research and innovation program under the MarieSkłodowska-Curie Grant Agreement No. 101034413","ddc":["510"],"_id":"19673","das_tickbox":"0","article_processing_charge":"No","arxiv":1,"supplementarymaterial":"no","type":"journal_article","page":"1-26","date_created":"2025-05-11T22:02:41Z","issue":"1","researchdata_availability":"no","intvolume":"         3","corr_author":"1"},{"isi":1,"author":[{"full_name":"Ballini, Francesco","first_name":"Francesco","last_name":"Ballini"},{"first_name":"Davide","last_name":"Lombardo","full_name":"Lombardo, Davide"},{"full_name":"Verzobio, Matteo","id":"7aa8f170-131e-11ed-88e1-a9efd01027cb","last_name":"Verzobio","orcid":"0000-0002-0854-0306","first_name":"Matteo"}],"quality_controlled":"1","oa_version":"Published Version","year":"2025","OA_type":"hybrid","status":"public","publisher":"Cambridge University Press","scopus_import":"1","day":"06","article_type":"original","external_id":{"isi":["001414690400001"]},"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","department":[{"_id":"TiBr"}],"month":"02","citation":{"ama":"Ballini F, Lombardo D, Verzobio M. On the L-polynomials of curves over finite fields. <i>Proceedings of the Royal Society of Edinburgh Section A: Mathematics</i>. 2025. doi:<a href=\"https://doi.org/10.1017/prm.2025.7\">10.1017/prm.2025.7</a>","ieee":"F. Ballini, D. Lombardo, and M. Verzobio, “On the L-polynomials of curves over finite fields,” <i>Proceedings of the Royal Society of Edinburgh Section A: Mathematics</i>. Cambridge University Press, 2025.","chicago":"Ballini, Francesco, Davide Lombardo, and Matteo Verzobio. “On the L-Polynomials of Curves over Finite Fields.” <i>Proceedings of the Royal Society of Edinburgh Section A: Mathematics</i>. Cambridge University Press, 2025. <a href=\"https://doi.org/10.1017/prm.2025.7\">https://doi.org/10.1017/prm.2025.7</a>.","apa":"Ballini, F., Lombardo, D., &#38; Verzobio, M. (2025). On the L-polynomials of curves over finite fields. <i>Proceedings of the Royal Society of Edinburgh Section A: Mathematics</i>. 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Verzobio, Proceedings of the Royal Society of Edinburgh Section A: Mathematics (2025)."},"supplementarymaterial":"no","type":"journal_article","date_created":"2025-03-16T23:01:25Z","das_tickbox":"0","_id":"19407","ddc":["500"],"article_processing_charge":"Yes (via OA deal)","corr_author":"1","researchdata_availability":"no","date_updated":"2026-07-16T09:31:02Z","doi":"10.1017/prm.2025.7","publication_identifier":{"eissn":["1473-7124"],"issn":["0308-2105"]},"abstract":[{"lang":"eng","text":"We discuss, in a non-Archimedean setting, the distribution of the coefficients of L-polynomials of curves of genus g over  Fq . Among other results, this allows us to prove that the  Q-vector space spanned by such characteristic polynomials has dimension g + 1. We also state a conjecture about the Archimedean distribution of the number of rational points of curves over finite fields."}],"date_published":"2025-02-06T00:00:00Z","title":"On the L-polynomials of curves over finite fields","main_file_link":[{"url":"https://doi.org/10.1017/prm.2025.7","open_access":"1"}],"acknowledgement":"We thank Umberto Zannier for bringing the problem to our attention, for many useful suggestions, and especially for pointing out the relevance of the equidistribution results of Katz–Sarnak, noting that they imply the case  q≫g0 of theorem 1.4. In addition, the first author would like to thank Umberto Zannier for his guidance during his undergraduate studies, on a topic that ultimately inspired much of the work in this article. We are grateful to J. Kaczorowski and A. Perelli for sharing their work [Reference Kaczorowski and Perelli28] before publication. We thank Christophe Ritzenthaler and Elisa Lorenzo García for their interesting comments on the first version of this article, Zhao Yu Ma for a comment about remark 3.12, and the anonymous referees for their helpful suggestions.","language":[{"iso":"eng"}],"OA_place":"publisher","publication":"Proceedings of the Royal Society of Edinburgh Section A: Mathematics","publication_status":"epub_ahead","oa":1},{"author":[{"full_name":"Chan, Yik Tung","id":"c4c0afc8-9262-11ed-9231-d8b0bc743af1","last_name":"Chan","orcid":"0000-0001-8467-4106","first_name":"Yik Tung"},{"first_name":"Peter","last_name":"Koymans","full_name":"Koymans, Peter"},{"last_name":"Pagano","first_name":"Carlo","full_name":"Pagano, Carlo"},{"first_name":"Efthymios","last_name":"Sofos","full_name":"Sofos, Efthymios"}],"oa_version":"Preprint","article_number":"18","year":"2025","OA_type":"green","status":"public","publisher":"Scuola Normale Superiore - Edizioni della Normale","article_type":"original","day":"07","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","external_id":{"arxiv":["2403.13359"]},"department":[{"_id":"TiBr"}],"month":"03","citation":{"ista":"Chan S, Koymans P, Pagano C, Sofos E. 2025. 6-torision and integral points on quartic threefolds. 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Scuola Normale Superiore - Edizioni della Normale, 2025.","apa":"Chan, S., Koymans, P., Pagano, C., &#38; Sofos, E. (2025). 6-torision and integral points on quartic threefolds. <i>Annali Della Scuola Normale Superiore Di Pisa, Classe Di Scienze</i>. Scuola Normale Superiore - Edizioni della Normale. <a href=\"https://doi.org/10.2422/2036-2145.202412_006\">https://doi.org/10.2422/2036-2145.202412_006</a>","short":"S. Chan, P. Koymans, C. Pagano, E. Sofos, Annali Della Scuola Normale Superiore Di Pisa, Classe Di Scienze (2025).","mla":"Chan, Stephanie, et al. “6-Torision and Integral Points on Quartic Threefolds.” <i>Annali Della Scuola Normale Superiore Di Pisa, Classe Di Scienze</i>, 18, Scuola Normale Superiore - Edizioni della Normale, 2025, doi:<a href=\"https://doi.org/10.2422/2036-2145.202412_006\">10.2422/2036-2145.202412_006</a>."},"supplementarymaterial":"no","type":"journal_article","date_created":"2025-04-05T10:49:27Z","_id":"19483","das_tickbox":"0","arxiv":1,"article_processing_charge":"No","corr_author":"1","researchdata_availability":"no","date_updated":"2026-07-16T09:35:52Z","doi":"10.2422/2036-2145.202412_006","publication_identifier":{"issn":["0391-173X"],"eissn":["2036-2145"]},"abstract":[{"text":"We prove matching upper and lower bounds for the average of the6-torsionof class groups of quadratic fields. Furthermore, we count the number of integer solutions on an affine quartic threefold.","lang":"eng"}],"date_published":"2025-03-07T00:00:00Z","title":"6-torision and integral points on quartic threefolds","main_file_link":[{"open_access":"1","url":" https://doi.org/10.48550/arXiv.2403.13359"}],"language":[{"iso":"eng"}],"OA_place":"repository","publication_status":"epub_ahead","publication":"Annali della Scuola Normale Superiore di Pisa, Classe di Scienze","oa":1},{"quality_controlled":"1","article_number":"rnaf249","oa_version":"Published Version","file_date_updated":"2025-09-02T07:55:05Z","OA_type":"hybrid","year":"2025","isi":1,"author":[{"full_name":"Verzobio, Matteo","id":"7aa8f170-131e-11ed-88e1-a9efd01027cb","last_name":"Verzobio","first_name":"Matteo","orcid":"0000-0002-0854-0306"}],"project":[{"call_identifier":"H2020","_id":"fc2ed2f7-9c52-11eb-aca3-c01059dda49c","name":"IST-BRIDGE: International postdoctoral program","grant_number":"101034413"}],"volume":2025,"external_id":{"arxiv":["2503.19451"],"isi":["001549126000001"]},"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","month":"08","department":[{"_id":"TiBr"}],"citation":{"ista":"Verzobio M. 2025. Counting rational points on smooth hypersurfaces with high degree. International Mathematics Research Notices. 2025(16), rnaf249.","chicago":"Verzobio, Matteo. “Counting Rational Points on Smooth Hypersurfaces with High Degree.” <i>International Mathematics Research Notices</i>. Oxford University Press, 2025. <a href=\"https://doi.org/10.1093/imrn/rnaf249\">https://doi.org/10.1093/imrn/rnaf249</a>.","ama":"Verzobio M. Counting rational points on smooth hypersurfaces with high degree. <i>International Mathematics Research Notices</i>. 2025;2025(16). doi:<a href=\"https://doi.org/10.1093/imrn/rnaf249\">10.1093/imrn/rnaf249</a>","ieee":"M. Verzobio, “Counting rational points on smooth hypersurfaces with high degree,” <i>International Mathematics Research Notices</i>, vol. 2025, no. 16. Oxford University Press, 2025.","apa":"Verzobio, M. (2025). Counting rational points on smooth hypersurfaces with high degree. <i>International Mathematics Research Notices</i>. Oxford University Press. <a href=\"https://doi.org/10.1093/imrn/rnaf249\">https://doi.org/10.1093/imrn/rnaf249</a>","short":"M. Verzobio, International Mathematics Research Notices 2025 (2025).","mla":"Verzobio, Matteo. “Counting Rational Points on Smooth Hypersurfaces with High Degree.” <i>International Mathematics Research Notices</i>, vol. 2025, no. 16, rnaf249, Oxford University Press, 2025, doi:<a href=\"https://doi.org/10.1093/imrn/rnaf249\">10.1093/imrn/rnaf249</a>."},"has_accepted_license":"1","publisher":"Oxford University Press","file":[{"date_updated":"2025-09-02T07:55:05Z","date_created":"2025-09-02T07:55:05Z","content_type":"application/pdf","file_size":540263,"access_level":"open_access","checksum":"482ae2be98841ee446cf2bdfcd79f86f","file_id":"20275","file_name":"2025_IMRN_Verzobio.pdf","creator":"dernst","success":1,"relation":"main_file"}],"scopus_import":"1","status":"public","ec_funded":1,"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)"},"day":"01","article_type":"original","intvolume":"      2025","corr_author":"1","issue":"16","researchdata_availability":"no","supplementarymaterial":"no","type":"journal_article","date_created":"2025-08-24T22:01:31Z","_id":"20222","ddc":["510"],"das_tickbox":"0","article_processing_charge":"Yes (via OA deal)","arxiv":1,"acknowledgement":"While working on this paper, the author was supported by the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 101034413. The author is very grateful to Tim Browning for suggesting the problem and for many useful discussions. We thank the anonymous referees for their many helpful comments, which improved the exposition of the paper. We are also grateful to Gal Binyamini for their interest in this work and for drawing our attention to the aforementioned paper [1].\r\nWe shared an early version of this paper with Per Salberger, who mentioned that he announced a new bound for smooth threefolds in P4 during a talk in 2019 (see [7] for the abstract). This result has not been published.","OA_place":"publisher","language":[{"iso":"eng"}],"oa":1,"publication_status":"published","publication":"International Mathematics Research Notices","date_updated":"2026-07-17T11:55:00Z","publication_identifier":{"eissn":["1687-0247"],"issn":["1073-7928"]},"doi":"10.1093/imrn/rnaf249","abstract":[{"text":"Let X be a smooth projective hypersurface defined over Q. We provide new bounds for rational points of bounded height on X. In particular, we show that if X is a smooth projective hypersurface in Pn with n  4 and degree d  50, then the set of rational points on X of height bounded by B have cardinality On,d,ε (Bn−2+ε ). If X is smooth and has degree d  6, we improve the dimension growth conjecture bound. 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Pairs of commuting integer matrices. Mathematische Annalen. 393, 1863–1880.","apa":"Browning, T. D., Sawin, W., &#38; Wang, V. (2025). Pairs of commuting integer matrices. <i>Mathematische Annalen</i>. Springer Nature. <a href=\"https://doi.org/10.1007/s00208-025-03285-5\">https://doi.org/10.1007/s00208-025-03285-5</a>","ama":"Browning TD, Sawin W, Wang V. Pairs of commuting integer matrices. <i>Mathematische Annalen</i>. 2025;393:1863–1880. doi:<a href=\"https://doi.org/10.1007/s00208-025-03285-5\">10.1007/s00208-025-03285-5</a>","chicago":"Browning, Timothy D, Will Sawin, and Victor Wang. “Pairs of Commuting Integer Matrices.” <i>Mathematische Annalen</i>. Springer Nature, 2025. <a href=\"https://doi.org/10.1007/s00208-025-03285-5\">https://doi.org/10.1007/s00208-025-03285-5</a>.","ieee":"T. D. Browning, W. Sawin, and V. Wang, “Pairs of commuting integer matrices,” <i>Mathematische Annalen</i>, vol. 393. Springer Nature, pp. 1863–1880, 2025.","short":"T.D. Browning, W. Sawin, V. Wang, Mathematische Annalen 393 (2025) 1863–1880.","mla":"Browning, Timothy D., et al. “Pairs of Commuting Integer Matrices.” <i>Mathematische Annalen</i>, vol. 393, Springer Nature, 2025, pp. 1863–1880, doi:<a href=\"https://doi.org/10.1007/s00208-025-03285-5\">10.1007/s00208-025-03285-5</a>."},"external_id":{"isi":["001567740200001"],"arxiv":["2409.01920"]},"volume":393,"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","department":[{"_id":"TiBr"}],"month":"10","_id":"20367","das_tickbox":"0","ddc":["510"],"arxiv":1,"article_processing_charge":"Yes (via OA deal)","type":"journal_article","supplementarymaterial":"no","date_created":"2025-09-21T22:01:31Z","page":"1863–1880","researchdata_availability":"no","intvolume":"       393","corr_author":"1","PlanS_conform":"1","abstract":[{"lang":"eng","text":"We prove upper and lower bounds on the number of pairs of commuting n x n matrices with integer entries in [-T, T], as T -> . Our work uses Fourier analysis and leads to an analysis of exponential sums involving matrices over finite fields. These are bounded by combining a stratification result of Fouvry and Katz with a new result about the flatness of the commutator Lie bracket."}],"date_published":"2025-10-01T00:00:00Z","title":"Pairs of commuting integer matrices","date_updated":"2026-07-17T12:01:12Z","doi":"10.1007/s00208-025-03285-5","publication_identifier":{"issn":["0025-5831"],"eissn":["1432-1807"]},"language":[{"iso":"eng"}],"OA_place":"publisher","publication_status":"published","publication":"Mathematische Annalen","oa":1,"acknowledgement":"The authors are very grateful to Alina Ostafe, Matthew Satriano and Igor Shparlinski for drawing their attention to this problem and for useful comments, and to Michael Larsen and Peter Sarnak for their helpful correspondence. We also thank the referee for their valuable input. While working on this paper the first author was supported by a FWF grant (DOI 10.55776/P36278), the second author by a Sloan Research Fellowship, and the third author by the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 101034413. Open access funding provided by Institute of Science and Technology (IST Austria)."},{"day":"23","article_type":"original","has_accepted_license":"1","status":"public","scopus_import":"1","file":[{"relation":"main_file","success":1,"content_type":"application/pdf","date_created":"2025-10-13T11:28:49Z","date_updated":"2025-10-13T11:28:49Z","file_name":"2025_ResearchNumberTheory_Rome.pdf","creator":"dernst","file_id":"20463","checksum":"d41fbdc0cfc1fbceb519eb49b20a3ec2","file_size":428531,"access_level":"open_access"}],"publisher":"Springer Nature","tmp":{"short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png"},"citation":{"apa":"Rome, N., &#38; Yamagishi, S. (2025). On the existence of magic squares of powers. <i>Research in Number Theory</i>. Springer Nature. <a href=\"https://doi.org/10.1007/s40993-025-00671-5\">https://doi.org/10.1007/s40993-025-00671-5</a>","chicago":"Rome, Nick, and Shuntaro Yamagishi. “On the Existence of Magic Squares of Powers.” <i>Research in Number Theory</i>. Springer Nature, 2025. <a href=\"https://doi.org/10.1007/s40993-025-00671-5\">https://doi.org/10.1007/s40993-025-00671-5</a>.","ieee":"N. Rome and S. Yamagishi, “On the existence of magic squares of powers,” <i>Research in Number Theory</i>, vol. 11, no. 4. Springer Nature, 2025.","ama":"Rome N, Yamagishi S. On the existence of magic squares of powers. <i>Research in Number Theory</i>. 2025;11(4). doi:<a href=\"https://doi.org/10.1007/s40993-025-00671-5\">10.1007/s40993-025-00671-5</a>","ista":"Rome N, Yamagishi S. 2025. On the existence of magic squares of powers. Research in Number Theory. 11(4), 91.","mla":"Rome, Nick, and Shuntaro Yamagishi. “On the Existence of Magic Squares of Powers.” <i>Research in Number Theory</i>, vol. 11, no. 4, 91, Springer Nature, 2025, doi:<a href=\"https://doi.org/10.1007/s40993-025-00671-5\">10.1007/s40993-025-00671-5</a>.","short":"N. Rome, S. Yamagishi, Research in Number Theory 11 (2025)."},"volume":11,"external_id":{"arxiv":["2406.09364"]},"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","month":"09","department":[{"_id":"TiBr"}],"author":[{"first_name":"Nick","last_name":"Rome","full_name":"Rome, Nick"},{"full_name":"Yamagishi, Shuntaro","id":"0c3fbc5c-f7a6-11ec-8d70-9485e75b416b","last_name":"Yamagishi","first_name":"Shuntaro"}],"project":[{"grant_number":"P32428","name":"New frontiers of the Manin conjecture","_id":"26AEDAB2-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"}],"article_number":"91","oa_version":"Published Version","file_date_updated":"2025-10-13T11:28:49Z","OA_type":"hybrid","year":"2025","quality_controlled":"1","abstract":[{"text":"For any d  2, we prove that there exists an integer n0(d) such that there exists an n × n\r\nmagic square of dth powers for all n  n0(d). In particular, we establish the existence of\r\nan n × n magic square of squares for all n  4, which settles a conjecture of\r\nVárilly-Alvarado. All previous approaches had been based on constructive methods and\r\nthe existence of n × n magic squares of dth powers had only been known for sparse\r\nvalues of n. We prove our result by the Hardy-Littlewood circle method, which in this\r\nsetting essentially reduces the problem to finding a sufficient number of disjoint linearly\r\nindependent subsets of the columns of the coefficient matrix of the equations defining\r\nmagic squares. We prove an optimal (up to a constant) lower bound for this quantity.","lang":"eng"}],"title":"On the existence of magic squares of powers","date_published":"2025-09-23T00:00:00Z","date_updated":"2026-07-17T12:16:15Z","publication_identifier":{"eissn":["2363-9555"]},"doi":"10.1007/s40993-025-00671-5","OA_place":"publisher","language":[{"iso":"eng"}],"oa":1,"publication":"Research in Number Theory","publication_status":"published","acknowledgement":"The authors are grateful to Tim Browning for his constant encouragement and enthusiasm, Jörg Brüdern for very helpful discussion regarding his paper [1] and Diyuan Wu for turning the proof of Theorem 2.4 in the original version into an algorithm and running the computation for us, for which the results are available in the appendix of the original version. They would also like to thank Christian Boyer for maintaining his website [4] which contains a comprehensive list of various magic squares discovered, Brady Haran and Tony Várilly-Alvarado for their public engagement activity of mathematics and magic squares of squares (A YouTube video “Magic Squares of Squares (are PROBABLY impossible)” of the Numberphile channel by Brady Haran, in which Tony Várilly-Alvarado appears as a guest speaker: https://www.youtube.com/watch?v=Kdsj84UdeYg.), and all the magic squares enthusiasts who have contributed to [4] which made this paper possible. Finally, the authors would like to thank the anonymous referees for their helpful comments, Daniel Flores for his work [11] which inspired them to optimise the proof of Theorem 2.4 and Trevor Wooley for very helpful discussion regarding recent developments in Waring’s problem and his comments on the original version of this paper.\r\nOpen access funding provided by Institute of Science and Technology (IST Austria). NR was supported by FWF project ESP 441-NBL while SY by a FWF grant (DOI 10.55776/P32428).","_id":"20423","ddc":["510"],"das_tickbox":"0","article_processing_charge":"Yes (via OA deal)","arxiv":1,"type":"journal_article","supplementarymaterial":"no","date_created":"2025-10-05T22:01:34Z","issue":"4","researchdata_availability":"no","intvolume":"        11","PlanS_conform":"1","corr_author":"1"},{"abstract":[{"text":"We show that Laplace isospectral deformations within a conformal class of generic Liouville metrics on the two-dimensional torus that are linear in the deformation parameter are necessarily trivial. Two of the main ingredients in our proof are a noncancellation result for the wave trace and an analysis of the second order variational formula for the energy functional associated to closed geodesics. Noncancellation allows us to detect parts of the length spectrum from the Laplace spectrum and conclude rational integrability for the deformed geodesic flow (Liouville metrics are folklorically conjectured to be the only Riemannian metrics with integrable geodesic flow on the torus). We then use the second variational formula to show how the preservation of a single rational torus is sufficient to conclude triviality of the deformation, assuming linearity. We also present some evidence that our hypothesis of linearity may indeed be necessary.","lang":"eng"}],"title":"Spectral rigidity of Liouville tori","date_published":"2025-11-13T00:00:00Z","date_updated":"2026-07-20T14:58:23Z","doi":"10.48550/ARXIV.2511.10398","OA_place":"repository","language":[{"iso":"eng"}],"oa":1,"publication":"arXiv","publication_status":"draft","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2511.10398","open_access":"1"}],"keyword":["Differential Geometry (math.DG)","Mathematical Physics (math-ph)","Dynamical Systems (math.DS)","Spectral Theory (math.SP)","FOS: Mathematics","FOS: Mathematics","FOS: Physical sciences","FOS: Physical sciences","58J42","37J35","37J35","35P20","58J40","58J50","37D40"],"_id":"22340","article_processing_charge":"No","arxiv":1,"type":"preprint","date_created":"2026-07-14T12:51:50Z","corr_author":"1","day":"13","status":"public","related_material":{"record":[{"status":"public","relation":"dissertation_contains","id":"22255"}]},"tmp":{"short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png"},"citation":{"mla":"Henheik, Sven Joscha, et al. “Spectral Rigidity of Liouville Tori.” <i>ArXiv</i>, doi:<a href=\"https://doi.org/10.48550/ARXIV.2511.10398\">10.48550/ARXIV.2511.10398</a>.","short":"S.J. Henheik, V. Kaloshin, Y. Li, A. Vig, ArXiv (n.d.).","chicago":"Henheik, Sven Joscha, Vadim Kaloshin, Yunzhe Li, and Amir Vig. “Spectral Rigidity of Liouville Tori.” <i>ArXiv</i>, n.d. <a href=\"https://doi.org/10.48550/ARXIV.2511.10398\">https://doi.org/10.48550/ARXIV.2511.10398</a>.","ama":"Henheik SJ, Kaloshin V, Li Y, Vig A. Spectral rigidity of Liouville tori. <i>arXiv</i>. doi:<a href=\"https://doi.org/10.48550/ARXIV.2511.10398\">10.48550/ARXIV.2511.10398</a>","ieee":"S. J. Henheik, V. Kaloshin, Y. Li, and A. Vig, “Spectral rigidity of Liouville tori,” <i>arXiv</i>. .","apa":"Henheik, S. J., Kaloshin, V., Li, Y., &#38; Vig, A. (n.d.). Spectral rigidity of Liouville tori. <i>arXiv</i>. <a href=\"https://doi.org/10.48550/ARXIV.2511.10398\">https://doi.org/10.48550/ARXIV.2511.10398</a>","ista":"Henheik SJ, Kaloshin V, Li Y, Vig A. Spectral rigidity of Liouville tori. arXiv, <a href=\"https://doi.org/10.48550/ARXIV.2511.10398\">10.48550/ARXIV.2511.10398</a>."},"external_id":{"arxiv":["2511.10398"]},"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","month":"11","department":[{"_id":"VaKa"},{"_id":"LaEr"}],"author":[{"id":"31d731d7-d235-11ea-ad11-b50331c8d7fb","full_name":"Henheik, Sven Joscha","orcid":"0000-0003-1106-327X","first_name":"Sven Joscha","last_name":"Henheik"},{"full_name":"Kaloshin, Vadim","id":"FE553552-CDE8-11E9-B324-C0EBE5697425","last_name":"Kaloshin","first_name":"Vadim","orcid":"0000-0002-6051-2628"},{"last_name":"Li","first_name":"Yunzhe","full_name":"Li, Yunzhe","id":"41cb05d3-f128-11eb-9611-e4e2b3cfba31"},{"id":"49d58dd5-45f5-11ec-9f86-8ce1276989b9","full_name":"Vig, Amir","first_name":"Amir","last_name":"Vig"}],"oa_version":"Preprint","OA_type":"green","year":"2025"},{"doi":"10.48550/ARXIV.2512.03865","date_updated":"2026-07-20T14:58:23Z","title":"Deformations of the standard map with prescribed actions and Lyapunov exponents","date_published":"2025-12-03T00:00:00Z","abstract":[{"text":"We construct nontrivial deformations of the standard map which preserve the symplectic actions, respectively the Lyapunov exponents, of infinitely many periodic orbits accumulating to an invariant curve. The proof uses a resonant normal-form construction to obtain a sequence of periodic orbits accumulating on an invariant curve with a Liouville rotation number. Within these normal forms we capture the dependence of these periodic orbits on the resonant Fourier coefficients of the dynamics on the invariant curve and, using the contraction mapping principle, obtain a suitable deformation achieving the prescribed spectral data associated with this sequence of orbits. The result can be viewed as a symplectic twist-map analogue of a length spectral nonrigidity phenomenon for Riemannian manifolds and convex billiards, and it motivates the existence problem for similar 'partially length-isospectral' deformations of strictly convex billiard tables.","lang":"eng"}],"acknowledgement":" The author would like to thank Vadim Kaloshin for initiating this project and for his guidance throughout its development. The author also\r\nthanks Abed Bounemoura, Bassam Fayad, Mathieu Helfter, Comlan Edmond Koudjinan, Illya Koval, Yi Pan, and Daniel Tsodikovich for many helpful discussions. The\r\nfinancial support of the ERC grant SPERIG #885707 is gratefully acknowledged.","keyword":["Dynamical Systems (math.DS)","FOS: Mathematics","FOS: Mathematics"],"main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2512.03865","open_access":"1"}],"oa":1,"publication":"arXiv","publication_status":"draft","OA_place":"repository","language":[{"iso":"eng"}],"date_created":"2026-07-14T13:02:29Z","type":"preprint","article_processing_charge":"No","arxiv":1,"_id":"22341","corr_author":"1","status":"public","ec_funded":1,"related_material":{"record":[{"status":"public","id":"22255","relation":"dissertation_contains"}]},"day":"03","month":"12","department":[{"_id":"VaKa"}],"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","external_id":{"arxiv":["2512.03865"]},"citation":{"short":"Y. Li, ArXiv (n.d.).","mla":"Li, Yunzhe. “Deformations of the Standard Map with Prescribed Actions and Lyapunov Exponents.” <i>ArXiv</i>, doi:<a href=\"https://doi.org/10.48550/ARXIV.2512.03865\">10.48550/ARXIV.2512.03865</a>.","ista":"Li Y. Deformations of the standard map with prescribed actions and Lyapunov exponents. arXiv, <a href=\"https://doi.org/10.48550/ARXIV.2512.03865\">10.48550/ARXIV.2512.03865</a>.","chicago":"Li, Yunzhe. “Deformations of the Standard Map with Prescribed Actions and Lyapunov Exponents.” <i>ArXiv</i>, n.d. <a href=\"https://doi.org/10.48550/ARXIV.2512.03865\">https://doi.org/10.48550/ARXIV.2512.03865</a>.","ieee":"Y. Li, “Deformations of the standard map with prescribed actions and Lyapunov exponents,” <i>arXiv</i>. .","ama":"Li Y. Deformations of the standard map with prescribed actions and Lyapunov exponents. <i>arXiv</i>. doi:<a href=\"https://doi.org/10.48550/ARXIV.2512.03865\">10.48550/ARXIV.2512.03865</a>","apa":"Li, Y. (n.d.). Deformations of the standard map with prescribed actions and Lyapunov exponents. <i>arXiv</i>. <a href=\"https://doi.org/10.48550/ARXIV.2512.03865\">https://doi.org/10.48550/ARXIV.2512.03865</a>"},"author":[{"id":"41cb05d3-f128-11eb-9611-e4e2b3cfba31","full_name":"Li, Yunzhe","first_name":"Yunzhe","last_name":"Li"}],"project":[{"call_identifier":"H2020","grant_number":"885707","name":"Spectral rigidity and integrability for billiards and geodesic flows","_id":"9B8B92DE-BA93-11EA-9121-9846C619BF3A"}],"OA_type":"green","year":"2025","oa_version":"Preprint"},{"day":"05","scopus_import":"1","publisher":"Springer Nature","status":"public","citation":{"mla":"Dujmovic, Jesko, et al. “Space-Deniable Proofs.” <i>23rd International Conference on Theory of Cryptography</i>, vol. 16271, Springer Nature, 2025, pp. 171–202, doi:<a href=\"https://doi.org/10.1007/978-3-032-12290-2_6\">10.1007/978-3-032-12290-2_6</a>.","short":"J. Dujmovic, C.U. Günther, K.Z. Pietrzak, in:, 23rd International Conference on Theory of Cryptography, Springer Nature, 2025, pp. 171–202.","apa":"Dujmovic, J., Günther, C. U., &#38; Pietrzak, K. Z. (2025). Space-deniable proofs. In <i>23rd International Conference on Theory of Cryptography</i> (Vol. 16271, pp. 171–202). Aarhus, Denmark: Springer Nature. <a href=\"https://doi.org/10.1007/978-3-032-12290-2_6\">https://doi.org/10.1007/978-3-032-12290-2_6</a>","ieee":"J. Dujmovic, C. U. Günther, and K. Z. Pietrzak, “Space-deniable proofs,” in <i>23rd International Conference on Theory of Cryptography</i>, Aarhus, Denmark, 2025, vol. 16271, pp. 171–202.","ama":"Dujmovic J, Günther CU, Pietrzak KZ. Space-deniable proofs. In: <i>23rd International Conference on Theory of Cryptography</i>. Vol 16271. Springer Nature; 2025:171-202. doi:<a href=\"https://doi.org/10.1007/978-3-032-12290-2_6\">10.1007/978-3-032-12290-2_6</a>","chicago":"Dujmovic, Jesko, Christoph Ullrich Günther, and Krzysztof Z Pietrzak. “Space-Deniable Proofs.” In <i>23rd International Conference on Theory of Cryptography</i>, 16271:171–202. Springer Nature, 2025. <a href=\"https://doi.org/10.1007/978-3-032-12290-2_6\">https://doi.org/10.1007/978-3-032-12290-2_6</a>.","ista":"Dujmovic J, Günther CU, Pietrzak KZ. 2025. Space-deniable proofs. 23rd International Conference on Theory of Cryptography. TCC: Theory of Cryptography, LNCS, vol. 16271, 171–202."},"volume":16271,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","external_id":{"cryptoeprintid":["2025/1723"]},"conference":{"name":"TCC: Theory of Cryptography","location":"Aarhus, Denmark","start_date":"2025-12-01","end_date":"2025-12-05"},"department":[{"_id":"KrPi"}],"month":"12","author":[{"full_name":"Dujmovic, Jesko","last_name":"Dujmovic","first_name":"Jesko"},{"id":"ec98511c-eb8e-11eb-b029-edd25d7271a1","full_name":"Günther, Christoph Ullrich","first_name":"Christoph Ullrich","last_name":"Günther"},{"full_name":"Pietrzak, Krzysztof Z","id":"3E04A7AA-F248-11E8-B48F-1D18A9856A87","last_name":"Pietrzak","first_name":"Krzysztof Z","orcid":"0000-0002-9139-1654"}],"project":[{"grant_number":"F8509","name":"Security and Privacy by Design for Complex Systems","_id":"34a34d57-11ca-11ed-8bc3-a2688a8724e1"}],"oa_version":"Preprint","year":"2025","OA_type":"green","quality_controlled":"1","abstract":[{"lang":"eng","text":"We introduce and construct a new proof system called Non-interactive Arguments of Knowledge or Space (NArKoS), where a space-bounded prover can convince a verifier they know a secret, while having access to sufficient space allows one to forge indistinguishable proofs without the secret.\r\nAn application of NArKoS are space-deniable proofs, which are proofs of knowledge (say for authentication in access control) that are sound when executed by a lightweight device like a smart-card or an RFID chip that cannot have much storage, but are deniable (in the strong sense of online deniability) as the verifier, like a card reader, can efficiently forge such proofs.\r\nWe construct NArKoS in the random oracle model using an OR-proof combining a sigma protocol (for the proof of knowledge of the secret) with a new proof system called simulatable Proof of Transient Space (simPoTS). We give two different constructions of simPoTS, one based on labelling graphs with high pebbling complexity, a technique used in the construction of memory-hard functions and proofs of space, and a more practical construction based on the verifiable space-hard functions from TCC’24 where a prover must compute a root of a sparse polynomial. In both cases, the main challenge is making the proofs efficiently simulatable."}],"date_published":"2025-12-05T00:00:00Z","title":"Space-deniable proofs","date_updated":"2026-07-21T09:17:38Z","doi":"10.1007/978-3-032-12290-2_6","cryptoeprintid":1,"publication_identifier":{"eissn":["1611-3349"],"issn":["0302-9743"],"isbn":["9783032122896"]},"language":[{"iso":"eng"}],"OA_place":"repository","publication":"23rd International Conference on Theory of Cryptography","publication_status":"published","oa":1,"alternative_title":["LNCS"],"main_file_link":[{"url":"https://eprint.iacr.org/2025/1723","open_access":"1"}],"acknowledgement":"Jesko Dujmovic: Funded by the European Union (ERC, LACONIC, 101041207). 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.\r\nChristoph U. Günther and Krzysztof Pietrzak: This research was funded in whole or in part by the Austrian Science Fund (FWF) 10.55776/F85. For open access purposes, the author has applied a CC BY public copyright license to any author-accepted manuscript version arising from this submission.","_id":"20844","das_tickbox":"1","article_processing_charge":"No","type":"conference","date_created":"2025-12-21T23:01:33Z","page":"171-202","intvolume":"     16271","corr_author":"1"},{"quality_controlled":"1","article_number":"A336","oa_version":"Published Version","file_date_updated":"2026-01-05T08:36:28Z","OA_type":"diamond","year":"2025","author":[{"last_name":"Mombarg","first_name":"J. S.G.","full_name":"Mombarg, J. S.G."},{"full_name":"Vanlaer, V.","first_name":"V.","last_name":"Vanlaer"},{"full_name":"Das, Srijan B","id":"9ce7c423-dacf-11ed-8942-e09c6cb27149","last_name":"Das","first_name":"Srijan B","orcid":"0000-0003-0896-7972"},{"first_name":"M.","last_name":"Rieutord","full_name":"Rieutord, M."},{"last_name":"Aerts","first_name":"C.","full_name":"Aerts, C."},{"last_name":"Bugnet","first_name":"Lisa Annabelle","orcid":"0000-0003-0142-4000","full_name":"Bugnet, Lisa Annabelle","id":"d9edb345-f866-11ec-9b37-d119b5234501"},{"full_name":"Mathis, S.","first_name":"S.","last_name":"Mathis"},{"last_name":"Reese","first_name":"D. R.","full_name":"Reese, D. R."},{"full_name":"Ballot, J.","last_name":"Ballot","first_name":"J."}],"project":[{"call_identifier":"H2020","_id":"fc2ed2f7-9c52-11eb-aca3-c01059dda49c","grant_number":"101034413","name":"IST-BRIDGE: International postdoctoral program"},{"name":"Unveiling the mysteries of stellar dynamics: a pioneering journey in magnetoasteroseismology","grant_number":"101165631","_id":"914d8549-16d5-11f0-9cad-bbe6324c93a9"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","volume":704,"external_id":{"arxiv":["2511.09617"]},"month":"12","department":[{"_id":"LiBu"}],"citation":{"short":"J.S.G. Mombarg, V. Vanlaer, S.B. Das, M. Rieutord, C. Aerts, L.A. Bugnet, S. Mathis, D.R. Reese, J. Ballot, Astronomy &#38; Astrophysics 704 (2025).","mla":"Mombarg, J. S. G., et al. “Is a 1D Perturbative Method Sufficient for Asteroseismic Modelling of β Cephei Pulsators? Implications for Measurements of Rotation and Internal Magnetic Fields.” <i>Astronomy &#38; Astrophysics</i>, vol. 704, A336, EDP Sciences, 2025, doi:<a href=\"https://doi.org/10.1051/0004-6361/202557247\">10.1051/0004-6361/202557247</a>.","ista":"Mombarg JSG, Vanlaer V, Das SB, Rieutord M, Aerts C, Bugnet LA, Mathis S, Reese DR, Ballot J. 2025. Is a 1D perturbative method sufficient for asteroseismic modelling of β Cephei pulsators? Implications for measurements of rotation and internal magnetic fields. Astronomy &#38; Astrophysics. 704, A336.","chicago":"Mombarg, J. S.G., V. Vanlaer, Srijan B Das, M. Rieutord, C. Aerts, Lisa Annabelle Bugnet, S. Mathis, D. R. Reese, and J. Ballot. “Is a 1D Perturbative Method Sufficient for Asteroseismic Modelling of β Cephei Pulsators? Implications for Measurements of Rotation and Internal Magnetic Fields.” <i>Astronomy &#38; Astrophysics</i>. EDP Sciences, 2025. <a href=\"https://doi.org/10.1051/0004-6361/202557247\">https://doi.org/10.1051/0004-6361/202557247</a>.","ieee":"J. S. G. Mombarg <i>et al.</i>, “Is a 1D perturbative method sufficient for asteroseismic modelling of β Cephei pulsators? Implications for measurements of rotation and internal magnetic fields,” <i>Astronomy &#38; Astrophysics</i>, vol. 704. EDP Sciences, 2025.","ama":"Mombarg JSG, Vanlaer V, Das SB, et al. Is a 1D perturbative method sufficient for asteroseismic modelling of β Cephei pulsators? Implications for measurements of rotation and internal magnetic fields. <i>Astronomy &#38; Astrophysics</i>. 2025;704. doi:<a href=\"https://doi.org/10.1051/0004-6361/202557247\">10.1051/0004-6361/202557247</a>","apa":"Mombarg, J. S. G., Vanlaer, V., Das, S. B., Rieutord, M., Aerts, C., Bugnet, L. A., … Ballot, J. (2025). Is a 1D perturbative method sufficient for asteroseismic modelling of β Cephei pulsators? Implications for measurements of rotation and internal magnetic fields. <i>Astronomy &#38; Astrophysics</i>. EDP Sciences. <a href=\"https://doi.org/10.1051/0004-6361/202557247\">https://doi.org/10.1051/0004-6361/202557247</a>"},"has_accepted_license":"1","ec_funded":1,"file":[{"success":1,"relation":"main_file","creator":"dernst","file_name":"2025_AstronomyAstrophysics_Mombarg.pdf","file_size":2620909,"access_level":"open_access","file_id":"20937","checksum":"d838b4783920c43b7cc866e9cf08b383","date_created":"2026-01-05T08:36:28Z","content_type":"application/pdf","date_updated":"2026-01-05T08:36:28Z"}],"publisher":"EDP Sciences","scopus_import":"1","status":"public","related_material":{"record":[{"id":"20936","relation":"research_data","status":"public"}]},"tmp":{"short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png"},"article_type":"original","day":"19","intvolume":"       704","PlanS_conform":"1","type":"journal_article","date_created":"2026-01-04T23:01:35Z","ddc":["520"],"_id":"20931","article_processing_charge":"No","arxiv":1,"acknowledgement":"We thank the anonymous referee for their comments on the manuscript, Dario Fritzewski for providing the distribution of fractions of critical rotation for the β Cephei sample, and Zhao Guo for the discussions. The research leading to these results has received funding from the European Research Council (ERC) under the Horizon Europe programme (Synergy Grant agreement N°101071505: 4D-STAR). While partially funded by the European Union, views and opinions expressed are however those of the authors 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. V.V. acknowledges support from the Research Foundation Flanders (FWO) under grant agreement N°1156923N (PhD Fellowship). S.B.D. acknowledges funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement N°101034413. L.B. gratefully acknowledges support from the European Research Council (ERC) under the Horizon Europe programme (Calcifer; Starting Grant agreement N°101165631). J.B., M.R., S.M. and J.S.G.M have been supported by CNES, focused on the preparation of the PLATO mission. Computations with ESTER and TOP have made use of the HPC resources from the CALMIP supercomputing centre (Grant 2023-P0107). This research made use of the numpy (Harris et al. 2020) and matplotlib (Hunter 2007) Python software packages.","OA_place":"publisher","language":[{"iso":"eng"}],"oa":1,"DOAJ_listed":"1","publication_status":"published","publication":"Astronomy & Astrophysics","date_updated":"2026-07-22T06:20:53Z","publication_identifier":{"eissn":["1432-0746"],"issn":["0004-6361"]},"doi":"10.1051/0004-6361/202557247","abstract":[{"text":"Context. Asymmetries in the observed rotational splittings of a multiplet contain information about the star’s rotation profile and internal magnetic field. Moreover, the frequency regularities of multiplets can be used for mode identification. However, to exploit this information, highly accurate theoretical predictions are needed.\r\n\r\nAims. We aim to quantify the difference in the predicted mode asymmetries between a 1D perturbative method and a 2D method that includes a 2D stellar structure model, which takes rotation into account. We then place these differences between 1D and 2D methods in the context of asteroseismic measurements of internal magnetic fields. We only focus on the asymmetries and not on possible additional frequency peaks that can arise when the magnetic and rotation axis are misaligned.\r\n\r\nMethods. We coupled the 1D pulsation codes GYRE and StORM to the 2D stellar structure code ESTER and compared the oscillation predictions with the results from the 2D TOP pulsation code. We focused on zero-age main-sequence models representative of rotating β Cephei pulsators spinning at up to 20 per cent of the critical Keplerian rotation rate. Specifically, we investigated low-radial-order gravity and pressure modes.\r\n\r\nResults. We find a generally good agreement between the oscillation frequencies resulting from the 1D and 2D pulsation codes. We report differences in predicted mode multiplet asymmetries of mostly below 0.06 d−1. Since the magnetic asymmetries are small compared to the differences in the rotational asymmetries resulting from the 1D and 2D predictions, accurate measurements of the magnetic field are in most cases challenging.\r\n\r\nConclusions. Differences in the predicted mode asymmetries of a rotating star between 1D perturbative methods and 2D non-perturbative methods can greatly hinder accurate measurements of internal magnetic fields in main-sequence pulsators with low-order modes. Nevertheless, reasonably accurate measurements could be possible with npg ≥ 2 modes if the internal rotation is roughly below 10 per cent of the Keplerian critical rotation frequency for (aligned) magnetic fields of the order of a few hundred kilogauss. While the differences between the 1D and 2D frequency predictions are mostly too large for internal magnetic field detections, the rotational asymmetries predicted by StORM are in general accurate enough for asteroseismic modelling of the stellar rotation in main-sequence stars with identified low-order modes.","lang":"eng"}],"title":"Is a 1D perturbative method sufficient for asteroseismic modelling of β Cephei pulsators? Implications for measurements of rotation and internal magnetic fields","date_published":"2025-12-19T00:00:00Z"},{"intvolume":"       112","issue":"21","type":"journal_article","date_created":"2026-01-04T23:01:34Z","_id":"20927","arxiv":1,"article_processing_charge":"No","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2512.05236","open_access":"1"}],"acknowledgement":"We thank R. Vijayaraghavan, V. Singh, A. Kamra, A. Barman, M. Patankar, S. Kundu, S. Hazra, S. Sahu, A. Riswadkar, A. Bhattacharjee, and S. Das for helpful discussions and experimental assistance. We acknowledge the Swarnajayanti Fellowship of the Department of Science and Technology (for M.M.D.), DST Nanomission Grant No. SR/NM/NS-45/2016, SERB SUPRA Grant No. SPR/2019/001247, ONRG Grant No. N62909–18-1–2058, and the Department of Atomic Energy of the Government of India Grant No. 12-R&D-TFR5.10–0100 for support.","language":[{"iso":"eng"}],"OA_place":"repository","publication":"Physical Review B","publication_status":"published","oa":1,"date_updated":"2026-07-22T06:21:32Z","doi":"10.1103/bdd1-b8ys","publication_identifier":{"issn":["2469-9950"],"eissn":["2469-9969"]},"abstract":[{"lang":"eng","text":"Cavity-magnon polaritons are hybrid excitations from the interaction between cavity photons and magnons, the quanta of collective spin oscillations. Along with the tunability of the magnon-photon coupling strength, fast information transfer and conversion speed are desired in hybrid devices. This can be achieved utilizing the propagating nature of spin waves with nonzero momentum for their ultrafast time dynamics and reduced ohmic dissipation. Antiferromagnets are particularly interesting as hosts for magnons since stray-field interactions are minimized and they support multiple modes with distinctive magnetic-field behavior across the phase diagram. Chromium trichloride (CrCl3) is a van der Waals layered antiferromagnet having a strong easy-plane anisotropy and a weak in-plane easy-axis anisotropy. Despite some magnetic resonance studies, the impact of magnetic reorientation of spins in CrCl3 on the cavity-magnon-polariton interaction strength as a function of magnetic field remains largely unexplored. In this study, we investigate the coupling between magnons in CrCl3 and photons in a coplanar waveguide resonator as a function of magnetic field. In particular, we find that the magnon-photon coupling strength varies nonmonotonically and distinctly with the magnetic field for the acoustic and the optical magnons, which can be utilized to tune the magnon-photon coupling strength using an external magnetic field as a knob. We find the signature of spin-flop transition in the two harmonics of the cavity due to a stronger dispersive coupling between optical magnons and cavity photons at lower fields. Additionally, we find standing modes formed by spin waves with nonzero momentum associated with the two hybrid magnons when the external field is applied at an angle with the crystal plane. These modes do not undergo substantial coupling with the cavity mode unlike the antiferromagnetic modes and can be used as low-loss propagation channels in hybrid devices."}],"date_published":"2025-12-19T00:00:00Z","title":"Cavity based sensing of antiferromagnetic canting and nonzero-momentum spin waves in a van der Waals cavity-magnon-polariton system","quality_controlled":"1","oa_version":"Preprint","article_number":"214443","year":"2025","OA_type":"green","author":[{"last_name":"Mandal","first_name":"Supriya","full_name":"Mandal, Supriya"},{"full_name":"Maji, Krishnendu","id":"76bc9e9f-ba0b-11ee-8184-90edabd17a58","last_name":"Maji","first_name":"Krishnendu"},{"id":"84b9700b-15b2-11ec-abd3-831089e67615","full_name":"Kapoor, Lucky","orcid":"0000-0001-8319-2148","first_name":"Lucky","last_name":"Kapoor"},{"full_name":"Sasmal, Souvik","first_name":"Souvik","last_name":"Sasmal"},{"full_name":"Manni, Soham","last_name":"Manni","first_name":"Soham"},{"last_name":"Jesudasan","first_name":"John","full_name":"Jesudasan, John"},{"first_name":"Pratap","last_name":"Raychaudhuri","full_name":"Raychaudhuri, Pratap"},{"first_name":"Arumugam","last_name":"Thamizhavel","full_name":"Thamizhavel, Arumugam"},{"first_name":"Mandar M.","last_name":"Deshmukh","full_name":"Deshmukh, Mandar M."}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","volume":112,"external_id":{"arxiv":["2512.05236"]},"department":[{"_id":"MaIb"},{"_id":"JoFi"}],"month":"12","citation":{"short":"S. Mandal, K. Maji, L. Kapoor, S. Sasmal, S. Manni, J. Jesudasan, P. Raychaudhuri, A. Thamizhavel, M.M. Deshmukh, Physical Review B 112 (2025).","mla":"Mandal, Supriya, et al. “Cavity Based Sensing of Antiferromagnetic Canting and Nonzero-Momentum Spin Waves in a van Der Waals Cavity-Magnon-Polariton System.” <i>Physical Review B</i>, vol. 112, no. 21, 214443, American Physical Society, 2025, doi:<a href=\"https://doi.org/10.1103/bdd1-b8ys\">10.1103/bdd1-b8ys</a>.","ista":"Mandal S, Maji K, Kapoor L, Sasmal S, Manni S, Jesudasan J, Raychaudhuri P, Thamizhavel A, Deshmukh MM. 2025. Cavity based sensing of antiferromagnetic canting and nonzero-momentum spin waves in a van der Waals cavity-magnon-polariton system. Physical Review B. 112(21), 214443.","apa":"Mandal, S., Maji, K., Kapoor, L., Sasmal, S., Manni, S., Jesudasan, J., … Deshmukh, M. M. (2025). Cavity based sensing of antiferromagnetic canting and nonzero-momentum spin waves in a van der Waals cavity-magnon-polariton system. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/bdd1-b8ys\">https://doi.org/10.1103/bdd1-b8ys</a>","chicago":"Mandal, Supriya, Krishnendu Maji, Lucky Kapoor, Souvik Sasmal, Soham Manni, John Jesudasan, Pratap Raychaudhuri, Arumugam Thamizhavel, and Mandar M. Deshmukh. “Cavity Based Sensing of Antiferromagnetic Canting and Nonzero-Momentum Spin Waves in a van Der Waals Cavity-Magnon-Polariton System.” <i>Physical Review B</i>. American Physical Society, 2025. <a href=\"https://doi.org/10.1103/bdd1-b8ys\">https://doi.org/10.1103/bdd1-b8ys</a>.","ieee":"S. Mandal <i>et al.</i>, “Cavity based sensing of antiferromagnetic canting and nonzero-momentum spin waves in a van der Waals cavity-magnon-polariton system,” <i>Physical Review B</i>, vol. 112, no. 21. American Physical Society, 2025.","ama":"Mandal S, Maji K, Kapoor L, et al. Cavity based sensing of antiferromagnetic canting and nonzero-momentum spin waves in a van der Waals cavity-magnon-polariton system. <i>Physical Review B</i>. 2025;112(21). doi:<a href=\"https://doi.org/10.1103/bdd1-b8ys\">10.1103/bdd1-b8ys</a>"},"related_material":{"record":[{"status":"public","relation":"research_data","id":"20940"}]},"publisher":"American Physical Society","scopus_import":"1","status":"public","day":"19","article_type":"original"},{"abstract":[{"text":"Supplementary material for Mombarg et al. (2025, A&A). Title: \"Is a 1D perturbative method sufficient for asteroseismic modelling of \r\n~Cephei pulsators? Implications for measurements of rotation and internal magnetic fields\"\r\n\r\nContent:\r\n- Non-rotating ESTER models and associated .GSM models. (Xini = 0.71, Zini = 0.014, vertical/horizonal viscosity 10^7 cm^2/s, vertical chemical diffusion 10^4 cm^2/s for evolution model. More details on the ESTER models can be found in the ESTER manual.\r\n\r\n- Rotational asymmetries computed with StORM and TOP in 1/d, and the central m=0 frequency from TOP in 1/d. (all_A*_new.pkl)\r\n\r\n- Magnetic asymmetries in 1/d for different obliquity angles between 0 and 90 deg for ZAMS and MAMS model, for B_0 = 75 kG. *_nu key gives unperturbed mode frequencies, *_npg the radial order (asym_dict.pkl, asym_dict_evol.pkl)","lang":"eng"}],"date_published":"2025-11-11T00:00:00Z","day":"11","title":"Is a 1D perturbative method sufficient for asteroseismic modelling of β Cephei pulsators?","date_updated":"2026-07-22T06:20:53Z","tmp":{"short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png"},"related_material":{"record":[{"id":"20931","relation":"used_in_publication","status":"public"}]},"doi":"10.5281/ZENODO.17580178","publisher":"Zenodo","status":"public","OA_place":"repository","citation":{"short":"J. Mombarg, V. Vanlaer, S.B. Das, M. Rieutord, C. Aerts, L.A. Bugnet, S. Mathis, D. Reese, J. Ballot, (2025).","mla":"Mombarg, Joey, et al. <i>Is a 1D Perturbative Method Sufficient for Asteroseismic Modelling of β Cephei Pulsators?</i> Zenodo, 2025, doi:<a href=\"https://doi.org/10.5281/ZENODO.17580178\">10.5281/ZENODO.17580178</a>.","ista":"Mombarg J, Vanlaer V, Das SB, Rieutord M, Aerts C, Bugnet LA, Mathis S, Reese D, Ballot J. 2025. Is a 1D perturbative method sufficient for asteroseismic modelling of β Cephei pulsators?, Zenodo, <a href=\"https://doi.org/10.5281/ZENODO.17580178\">10.5281/ZENODO.17580178</a>.","apa":"Mombarg, J., Vanlaer, V., Das, S. B., Rieutord, M., Aerts, C., Bugnet, L. A., … Ballot, J. (2025). Is a 1D perturbative method sufficient for asteroseismic modelling of β Cephei pulsators? Zenodo. <a href=\"https://doi.org/10.5281/ZENODO.17580178\">https://doi.org/10.5281/ZENODO.17580178</a>","chicago":"Mombarg, Joey, Vincent Vanlaer, Srijan B Das, Michel Rieutord, Conny Aerts, Lisa Annabelle Bugnet, Stephane Mathis, Daniel Reese, and Jerome Ballot. “Is a 1D Perturbative Method Sufficient for Asteroseismic Modelling of β Cephei Pulsators?” Zenodo, 2025. <a href=\"https://doi.org/10.5281/ZENODO.17580178\">https://doi.org/10.5281/ZENODO.17580178</a>.","ieee":"J. Mombarg <i>et al.</i>, “Is a 1D perturbative method sufficient for asteroseismic modelling of β Cephei pulsators?” Zenodo, 2025.","ama":"Mombarg J, Vanlaer V, Das SB, et al. Is a 1D perturbative method sufficient for asteroseismic modelling of β Cephei pulsators? 2025. doi:<a href=\"https://doi.org/10.5281/ZENODO.17580178\">10.5281/ZENODO.17580178</a>"},"oa":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","main_file_link":[{"open_access":"1","url":"https://doi.org/10.5281/zenodo.17580178"}],"department":[{"_id":"LiBu"}],"month":"11","_id":"20936","ddc":["520"],"author":[{"full_name":"Mombarg, Joey","first_name":"Joey","last_name":"Mombarg"},{"full_name":"Vanlaer, Vincent","first_name":"Vincent","last_name":"Vanlaer"},{"full_name":"Das, Srijan B","id":"9ce7c423-dacf-11ed-8942-e09c6cb27149","last_name":"Das","orcid":"0000-0003-0896-7972","first_name":"Srijan B"},{"last_name":"Rieutord","first_name":"Michel","full_name":"Rieutord, Michel"},{"full_name":"Aerts, Conny","last_name":"Aerts","first_name":"Conny"},{"first_name":"Lisa Annabelle","orcid":"0000-0003-0142-4000","last_name":"Bugnet","id":"d9edb345-f866-11ec-9b37-d119b5234501","full_name":"Bugnet, Lisa Annabelle"},{"full_name":"Mathis, Stephane","first_name":"Stephane","last_name":"Mathis"},{"full_name":"Reese, Daniel","first_name":"Daniel","last_name":"Reese"},{"last_name":"Ballot","first_name":"Jerome","full_name":"Ballot, Jerome"}],"article_processing_charge":"No","type":"research_data_reference","date_created":"2026-01-05T08:39:33Z","oa_version":"Published Version","year":"2025","OA_type":"gold"},{"type":"preprint","date_created":"2026-01-20T10:12:21Z","das_tickbox":"1","_id":"21016","article_processing_charge":"No","arxiv":1,"date_updated":"2026-07-22T06:33:07Z","doi":"10.48550/arXiv.2505.17858","abstract":[{"text":"Motivated by applications in chemistry, we give a homlogical definition of tunnels, or more generally cobordisms, connecting disjoint parts of a cell complex. For a filtered complex, this defines a persistence module. We give a method for identifying birth and death times using kernel persistence and a matrix reduction algorithm for pairing birth and death times.","lang":"eng"}],"title":"Identifying cobordisms using kernel persistence","date_published":"2025-05-23T00:00:00Z","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2505.17858"}],"acknowledgement":"Y. B. B. and L. F. were funded by the Independent Research Fund Denmark, grant\r\nnumber 1026-00037. T. H. was partially supported by the European Research Council\r\n(ERC) Horizon 2020, grant number 788183.","OA_place":"repository","language":[{"iso":"eng"}],"oa":1,"publication_status":"submitted","publication":"arXiv","author":[{"last_name":"Bleile","first_name":"Yossi","orcid":"0000-0002-4861-9174","full_name":"Bleile, Yossi","id":"920a7385-7995-11ef-9bfd-8c434cd8f3c2"},{"first_name":"Lisbeth","last_name":"Fajstrup","full_name":"Fajstrup, Lisbeth"},{"id":"4879BB4E-F248-11E8-B48F-1D18A9856A87","full_name":"Heiss, Teresa","orcid":"0000-0002-1780-2689","first_name":"Teresa","last_name":"Heiss"},{"first_name":"Anne Marie","last_name":"Svane","full_name":"Svane, Anne Marie"},{"full_name":"Sørensen, Søren Strandskov","first_name":"Søren Strandskov","last_name":"Sørensen"}],"project":[{"call_identifier":"H2020","_id":"266A2E9E-B435-11E9-9278-68D0E5697425","name":"Alpha Shape Theory Extended","grant_number":"788183"}],"article_number":"2505.17858","oa_version":"Preprint","OA_type":"green","year":"2025","status":"public","ec_funded":1,"day":"23","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","external_id":{"arxiv":["2505.17858"]},"month":"05","department":[{"_id":"HeEd"}],"citation":{"ista":"Bokor Bleile Y, Fajstrup L, Heiss T, Svane AM, Sørensen SS. Identifying cobordisms using kernel persistence. arXiv, 2505.17858.","chicago":"Bokor Bleile, Yossi, Lisbeth Fajstrup, Teresa Heiss, Anne Marie Svane, and Søren Strandskov Sørensen. “Identifying Cobordisms Using Kernel Persistence.” <i>ArXiv</i>, n.d. <a href=\"https://doi.org/10.48550/arXiv.2505.17858\">https://doi.org/10.48550/arXiv.2505.17858</a>.","ama":"Bokor Bleile Y, Fajstrup L, Heiss T, Svane AM, Sørensen SS. Identifying cobordisms using kernel persistence. <i>arXiv</i>. doi:<a href=\"https://doi.org/10.48550/arXiv.2505.17858\">10.48550/arXiv.2505.17858</a>","ieee":"Y. Bokor Bleile, L. Fajstrup, T. Heiss, A. M. Svane, and S. S. Sørensen, “Identifying cobordisms using kernel persistence,” <i>arXiv</i>. .","apa":"Bokor Bleile, Y., Fajstrup, L., Heiss, T., Svane, A. M., &#38; Sørensen, S. S. (n.d.). Identifying cobordisms using kernel persistence. <i>arXiv</i>. <a href=\"https://doi.org/10.48550/arXiv.2505.17858\">https://doi.org/10.48550/arXiv.2505.17858</a>","short":"Y. Bokor Bleile, L. Fajstrup, T. Heiss, A.M. Svane, S.S. Sørensen, ArXiv (n.d.).","mla":"Bokor Bleile, Yossi, et al. “Identifying Cobordisms Using Kernel Persistence.” <i>ArXiv</i>, 2505.17858, doi:<a href=\"https://doi.org/10.48550/arXiv.2505.17858\">10.48550/arXiv.2505.17858</a>."}},{"has_accepted_license":"1","date_updated":"2026-07-22T06:21:33Z","tmp":{"short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png"},"doi":"10.5281/ZENODO.15321721","related_material":{"record":[{"relation":"used_in_publication","id":"20927","status":"public"}]},"status":"public","publisher":"Zenodo","abstract":[{"lang":"eng","text":"These are the raw data files that supplement our study of mode dispersion with magnetic field of a cavity-magnonics system containing chromium trichloride on coplanar waveguide resonator."}],"date_published":"2025-05-02T00:00:00Z","day":"02","title":"Mode dispersion with magnetic field in a cavity-magnonics system","main_file_link":[{"url":"https://doi.org/10.5281/ZENODO.15321721","open_access":"1"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","department":[{"_id":"MaIb"},{"_id":"JoFi"}],"month":"05","OA_place":"repository","citation":{"ieee":"S. Mandal <i>et al.</i>, “Mode dispersion with magnetic field in a cavity-magnonics system.” Zenodo, 2025.","chicago":"Mandal, Supriya, Krishnendu Maji, Lucky Kapoor, Souvik Sasmal, Soham Manni, John Jesudasan, Pratap Raychaudhuri, Arumugam Thamizhavel, and Mandar M. Deshmukh. “Mode Dispersion with Magnetic Field in a Cavity-Magnonics System.” Zenodo, 2025. <a href=\"https://doi.org/10.5281/ZENODO.15321721\">https://doi.org/10.5281/ZENODO.15321721</a>.","ama":"Mandal S, Maji K, Kapoor L, et al. Mode dispersion with magnetic field in a cavity-magnonics system. 2025. doi:<a href=\"https://doi.org/10.5281/ZENODO.15321721\">10.5281/ZENODO.15321721</a>","apa":"Mandal, S., Maji, K., Kapoor, L., Sasmal, S., Manni, S., Jesudasan, J., … Deshmukh, M. M. (2025). Mode dispersion with magnetic field in a cavity-magnonics system. Zenodo. <a href=\"https://doi.org/10.5281/ZENODO.15321721\">https://doi.org/10.5281/ZENODO.15321721</a>","ista":"Mandal S, Maji K, Kapoor L, Sasmal S, Manni S, Jesudasan J, Raychaudhuri P, Thamizhavel A, Deshmukh MM. 2025. Mode dispersion with magnetic field in a cavity-magnonics system, Zenodo, <a href=\"https://doi.org/10.5281/ZENODO.15321721\">10.5281/ZENODO.15321721</a>.","mla":"Mandal, Supriya, et al. <i>Mode Dispersion with Magnetic Field in a Cavity-Magnonics System</i>. Zenodo, 2025, doi:<a href=\"https://doi.org/10.5281/ZENODO.15321721\">10.5281/ZENODO.15321721</a>.","short":"S. Mandal, K. Maji, L. Kapoor, S. Sasmal, S. Manni, J. Jesudasan, P. Raychaudhuri, A. Thamizhavel, M.M. Deshmukh, (2025)."},"oa":1,"type":"research_data_reference","date_created":"2026-01-05T10:00:06Z","_id":"20940","author":[{"first_name":"Supriya","last_name":"Mandal","full_name":"Mandal, Supriya"},{"first_name":"Krishnendu","last_name":"Maji","id":"76bc9e9f-ba0b-11ee-8184-90edabd17a58","full_name":"Maji, Krishnendu"},{"orcid":"0000-0001-8319-2148","first_name":"Lucky","last_name":"Kapoor","id":"84b9700b-15b2-11ec-abd3-831089e67615","full_name":"Kapoor, Lucky"},{"full_name":"Sasmal, Souvik","first_name":"Souvik","last_name":"Sasmal"},{"last_name":"Manni","first_name":"Soham","full_name":"Manni, Soham"},{"full_name":"Jesudasan, John","first_name":"John","last_name":"Jesudasan"},{"first_name":"Pratap","last_name":"Raychaudhuri","full_name":"Raychaudhuri, Pratap"},{"full_name":"Thamizhavel, Arumugam","last_name":"Thamizhavel","first_name":"Arumugam"},{"full_name":"Deshmukh, Mandar M.","last_name":"Deshmukh","first_name":"Mandar M."}],"article_processing_charge":"No","oa_version":"Published Version","year":"2025","OA_type":"green"},{"language":[{"iso":"eng"}],"OA_place":"repository","citation":{"ista":"Bolan M, Breitner J, Brox J, Carlini N, Carneiro M, Doorn F van, Dvorak M, Goens A, Hill A, Husum H, Mejia HI, Kocsis ZA, Floch BL, Bar-on A, Luccioli L, McNeil D, Meiburg A, Monticone P, Nielsen PP, Osazuwa EO, Paolini G, Petracci M, Reinke B, Renshaw D, Rossel M, Roux C, Scanvic J, Srinivas S, Tadipatri AR, Tao T, Tsyrklevich V, Vaquerizo-Villar F, Weber D, Zheng F. The equational theories project: Advancing collaborative mathematical research at scale. arXiv, 2512.07087.","chicago":"Bolan, Matthew, Joachim Breitner, Jose Brox, Nicholas Carlini, Mario Carneiro, Floris van Doorn, Martin Dvorak, et al. “The Equational Theories Project: Advancing Collaborative Mathematical Research at Scale.” <i>ArXiv</i>, n.d. <a href=\"https://doi.org/10.48550/arXiv.2512.07087\">https://doi.org/10.48550/arXiv.2512.07087</a>.","ieee":"M. Bolan <i>et al.</i>, “The equational theories project: Advancing collaborative mathematical research at scale,” <i>arXiv</i>. .","ama":"Bolan M, Breitner J, Brox J, et al. The equational theories project: Advancing collaborative mathematical research at scale. <i>arXiv</i>. doi:<a href=\"https://doi.org/10.48550/arXiv.2512.07087\">10.48550/arXiv.2512.07087</a>","apa":"Bolan, M., Breitner, J., Brox, J., Carlini, N., Carneiro, M., Doorn, F. van, … Zheng, F. (n.d.). The equational theories project: Advancing collaborative mathematical research at scale. <i>arXiv</i>. <a href=\"https://doi.org/10.48550/arXiv.2512.07087\">https://doi.org/10.48550/arXiv.2512.07087</a>","short":"M. Bolan, J. Breitner, J. Brox, N. Carlini, M. Carneiro, F. van Doorn, M. Dvorak, A. Goens, A. Hill, H. Husum, H.I. Mejia, Z.A. Kocsis, B.L. Floch, A. Bar-on, L. Luccioli, D. McNeil, A. Meiburg, P. Monticone, P.P. Nielsen, E.O. Osazuwa, G. Paolini, M. Petracci, B. Reinke, D. Renshaw, M. Rossel, C. Roux, J. Scanvic, S. Srinivas, A.R. Tadipatri, T. Tao, V. Tsyrklevich, F. Vaquerizo-Villar, D. Weber, F. Zheng, ArXiv (n.d.).","mla":"Bolan, Matthew, et al. “The Equational Theories Project: Advancing Collaborative Mathematical Research at Scale.” <i>ArXiv</i>, 2512.07087, doi:<a href=\"https://doi.org/10.48550/arXiv.2512.07087\">10.48550/arXiv.2512.07087</a>."},"publication":"arXiv","publication_status":"submitted","oa":1,"external_id":{"arxiv":["2512.07087"]},"main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2512.07087"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","department":[{"_id":"GradSch"},{"_id":"VlKo"}],"month":"12","abstract":[{"text":"We report on the Equational Theories Project (ETP), an online collaborative pilot project to explore new ways to collaborate in mathematics with machine assistance. The project successfully determined all 22 028 942 edges of the implication graph between the 4694 simplest equational laws on magmas, by a combination of human-generated and automated proofs, all validated by the formal proof assistant language Lean. As a result of this project, several new constructions of magmas satisfying specific laws were discovered, and several auxiliary questions were also addressed, such as the effect of restricting attention to finite magmas.","lang":"eng"}],"date_published":"2025-12-16T00:00:00Z","day":"16","title":"The equational theories project: Advancing collaborative mathematical research at scale","date_updated":"2026-07-22T06:35:39Z","doi":"10.48550/arXiv.2512.07087","tmp":{"short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png"},"status":"public","oa_version":"Preprint","article_number":"2512.07087","year":"2025","OA_type":"green","das_tickbox":"1","_id":"21399","author":[{"last_name":"Bolan","first_name":"Matthew","full_name":"Bolan, Matthew"},{"full_name":"Breitner, Joachim","last_name":"Breitner","first_name":"Joachim"},{"first_name":"Jose","last_name":"Brox","full_name":"Brox, Jose"},{"last_name":"Carlini","first_name":"Nicholas","full_name":"Carlini, Nicholas"},{"first_name":"Mario","last_name":"Carneiro","full_name":"Carneiro, Mario"},{"last_name":"Doorn","first_name":"Floris van","full_name":"Doorn, Floris van"},{"full_name":"Dvorak, Martin","id":"40ED02A8-C8B4-11E9-A9C0-453BE6697425","last_name":"Dvorak","first_name":"Martin","orcid":"0000-0001-5293-214X"},{"full_name":"Goens, Andrés","first_name":"Andrés","last_name":"Goens"},{"last_name":"Hill","first_name":"Aaron","full_name":"Hill, Aaron"},{"full_name":"Husum, Harald","first_name":"Harald","last_name":"Husum"},{"full_name":"Mejia, Hernán Ibarra","last_name":"Mejia","first_name":"Hernán Ibarra"},{"first_name":"Zoltan A.","last_name":"Kocsis","full_name":"Kocsis, Zoltan A."},{"full_name":"Floch, Bruno Le","last_name":"Floch","first_name":"Bruno Le"},{"full_name":"Bar-on, Amir","last_name":"Bar-on","first_name":"Amir"},{"full_name":"Luccioli, Lorenzo","first_name":"Lorenzo","last_name":"Luccioli"},{"full_name":"McNeil, Douglas","first_name":"Douglas","last_name":"McNeil"},{"full_name":"Meiburg, Alex","first_name":"Alex","last_name":"Meiburg"},{"full_name":"Monticone, Pietro","first_name":"Pietro","last_name":"Monticone"},{"full_name":"Nielsen, Pace P.","last_name":"Nielsen","first_name":"Pace P."},{"first_name":"Emmanuel Osalotioman","last_name":"Osazuwa","full_name":"Osazuwa, Emmanuel Osalotioman"},{"full_name":"Paolini, Giovanni","first_name":"Giovanni","last_name":"Paolini"},{"full_name":"Petracci, Marco","first_name":"Marco","last_name":"Petracci"},{"full_name":"Reinke, Bernhard","first_name":"Bernhard","last_name":"Reinke"},{"last_name":"Renshaw","first_name":"David","full_name":"Renshaw, David"},{"last_name":"Rossel","first_name":"Marcus","full_name":"Rossel, Marcus"},{"full_name":"Roux, Cody","first_name":"Cody","last_name":"Roux"},{"last_name":"Scanvic","first_name":"Jérémy","full_name":"Scanvic, Jérémy"},{"first_name":"Shreyas","last_name":"Srinivas","full_name":"Srinivas, Shreyas"},{"full_name":"Tadipatri, Anand Rao","first_name":"Anand Rao","last_name":"Tadipatri"},{"first_name":"Terence","last_name":"Tao","full_name":"Tao, Terence"},{"last_name":"Tsyrklevich","first_name":"Vlad","full_name":"Tsyrklevich, Vlad"},{"last_name":"Vaquerizo-Villar","first_name":"Fernando","full_name":"Vaquerizo-Villar, Fernando"},{"full_name":"Weber, Daniel","first_name":"Daniel","last_name":"Weber"},{"full_name":"Zheng, Fan","first_name":"Fan","last_name":"Zheng"}],"arxiv":1,"article_processing_charge":"No","type":"preprint","date_created":"2026-03-04T12:00:16Z"},{"_id":"21207","das_tickbox":"1","author":[{"first_name":"Hossein","orcid":"0009-0007-3977-6462","last_name":"Zakerinia","id":"653bd8b6-f394-11eb-9cf6-c0bbf6cd78d4","full_name":"Zakerinia, Hossein"},{"full_name":"Scott, Jonathan A","id":"e499926b-f6e0-11ea-865d-9c63db0031e8","last_name":"Scott","first_name":"Jonathan A"},{"full_name":"Lampert, Christoph","id":"40C20FD2-F248-11E8-B48F-1D18A9856A87","last_name":"Lampert","orcid":"0000-0001-8622-7887","first_name":"Christoph"}],"article_processing_charge":"No","type":"preprint","date_created":"2026-02-10T08:20:59Z","article_number":"2505.15579","oa_version":"Preprint","year":"2025","OA_type":"green","corr_author":"1","abstract":[{"text":"Personalized federated learning has emerged as a popular approach to training on devices holding statistically heterogeneous data, known as clients. However, most existing approaches require a client to have labeled data for training or finetuning in order to obtain their own personalized model. In this paper we address this by proposing FLowDUP, a novel method that is able to generate a personalized model using only a forward pass with unlabeled data. The generated model parameters reside in a low-dimensional subspace, enabling efficient communication and computation. FLowDUP's learning objective is theoretically motivated by our new transductive multi-task PAC-Bayesian generalization bound, that provides performance guarantees for unlabeled clients. The objective is structured in such a way that it allows both clients with labeled data and clients with only unlabeled data to contribute to the training process. To supplement our theoretical results we carry out a thorough experimental evaluation of FLowDUP, demonstrating strong empirical performance on a range of datasets with differing sorts of statistically heterogeneous clients. Through numerous ablation studies, we test the efficacy of the individual components of the method.","lang":"eng"}],"date_published":"2025-05-21T00:00:00Z","title":"Federated learning with unlabeled clients: Personalization can happen in low dimensions","day":"21","date_updated":"2026-07-22T06:34:28Z","tmp":{"short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png"},"doi":"10.48550/ARXIV.2505.15579","related_material":{"record":[{"id":"21198","relation":"dissertation_contains","status":"public"}]},"status":"public","language":[{"iso":"eng"}],"OA_place":"repository","citation":{"mla":"Zakerinia, Hossein, et al. “Federated Learning with Unlabeled Clients: Personalization Can Happen in Low Dimensions.” <i>ArXiv</i>, 2505.15579, doi:<a href=\"https://doi.org/10.48550/ARXIV.2505.15579\">10.48550/ARXIV.2505.15579</a>.","short":"H. Zakerinia, J.A. Scott, C. Lampert, ArXiv (n.d.).","apa":"Zakerinia, H., Scott, J. A., &#38; Lampert, C. (n.d.). Federated learning with unlabeled clients: Personalization can happen in low dimensions. <i>arXiv</i>. <a href=\"https://doi.org/10.48550/ARXIV.2505.15579\">https://doi.org/10.48550/ARXIV.2505.15579</a>","ieee":"H. Zakerinia, J. A. Scott, and C. Lampert, “Federated learning with unlabeled clients: Personalization can happen in low dimensions,” <i>arXiv</i>. .","chicago":"Zakerinia, Hossein, Jonathan A Scott, and Christoph Lampert. “Federated Learning with Unlabeled Clients: Personalization Can Happen in Low Dimensions.” <i>ArXiv</i>, n.d. <a href=\"https://doi.org/10.48550/ARXIV.2505.15579\">https://doi.org/10.48550/ARXIV.2505.15579</a>.","ama":"Zakerinia H, Scott JA, Lampert C. Federated learning with unlabeled clients: Personalization can happen in low dimensions. <i>arXiv</i>. doi:<a href=\"https://doi.org/10.48550/ARXIV.2505.15579\">10.48550/ARXIV.2505.15579</a>","ista":"Zakerinia H, Scott JA, Lampert C. Federated learning with unlabeled clients: Personalization can happen in low dimensions. arXiv, 2505.15579."},"publication_status":"draft","publication":"arXiv","oa":1,"main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2505.15579","open_access":"1"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","department":[{"_id":"ChLa"}],"month":"05"},{"related_material":{"record":[{"relation":"dissertation_contains","id":"21021","status":"public"},{"id":"21931","relation":"later_version","status":"public"}]},"tmp":{"short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png"},"status":"public","day":"20","external_id":{"arxiv":["2501.05315"]},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","department":[{"_id":"HeEd"}],"month":"03","citation":{"ama":"Edelsbrunner H, Fillmore CD, Olivera G. Counting equilibria of the electrostatic potential. <i>arXiv</i>. doi:<a href=\"https://doi.org/10.48550/ARXIV.2501.05315\">10.48550/ARXIV.2501.05315</a>","ieee":"H. Edelsbrunner, C. D. Fillmore, and G. Olivera, “Counting equilibria of the electrostatic potential,” <i>arXiv</i>. .","chicago":"Edelsbrunner, Herbert, Christopher D Fillmore, and Gonçalo Olivera. “Counting Equilibria of the Electrostatic Potential.” <i>ArXiv</i>, n.d. <a href=\"https://doi.org/10.48550/ARXIV.2501.05315\">https://doi.org/10.48550/ARXIV.2501.05315</a>.","apa":"Edelsbrunner, H., Fillmore, C. D., &#38; Olivera, G. (n.d.). Counting equilibria of the electrostatic potential. <i>arXiv</i>. <a href=\"https://doi.org/10.48550/ARXIV.2501.05315\">https://doi.org/10.48550/ARXIV.2501.05315</a>","ista":"Edelsbrunner H, Fillmore CD, Olivera G. Counting equilibria of the electrostatic potential. arXiv, 2501.05315.","mla":"Edelsbrunner, Herbert, et al. “Counting Equilibria of the Electrostatic Potential.” <i>ArXiv</i>, 2501.05315, doi:<a href=\"https://doi.org/10.48550/ARXIV.2501.05315\">10.48550/ARXIV.2501.05315</a>.","short":"H. Edelsbrunner, C.D. Fillmore, G. Olivera, ArXiv (n.d.)."},"author":[{"first_name":"Herbert","orcid":"0000-0002-9823-6833","last_name":"Edelsbrunner","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","full_name":"Edelsbrunner, Herbert"},{"first_name":"Christopher D","last_name":"Fillmore","id":"35638A5C-AAC7-11E9-B0BF-5503E6697425","full_name":"Fillmore, Christopher D"},{"first_name":"Gonçalo","last_name":"Olivera","full_name":"Olivera, Gonçalo"}],"article_number":"2501.05315","oa_version":"Preprint","year":"2025","OA_type":"green","date_updated":"2026-07-22T06:33:55Z","doi":"10.48550/ARXIV.2501.05315","abstract":[{"text":"In 1873, James C. Maxwell conjectured that the electric field generated by $n$ point charges in generic position has at most $(n-1)^2$ isolated zeroes. The first (non-optimal) upper bound was only obtained in 2007 by Gabrielov, Novikov and Shapiro, who also posed two additional interesting conjectures.\r\n In this article, we give the best upper bound known to date on the number of zeroes of the electric field, and construct a counterexample to a conjecture of Gabrielov, Novikov and Shapiro that the number of equilibria cannot exceed those of the distance function defined by the unit point charges.\r\n Finally, we note that it is quite possible that Maxwell's quadratic upper bound is not tight, so it is prudent to find smaller bounds. Hence, we also explore examples and construct configurations of charges achieving the highest ratios of the number of electric field zeroes by point charges found to this day.","lang":"eng"}],"date_published":"2025-03-20T00:00:00Z","title":"Counting equilibria of the electrostatic potential","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2501.05315","open_access":"1"}],"language":[{"iso":"eng"}],"OA_place":"repository","publication":"arXiv","publication_status":"draft","oa":1,"type":"preprint","date_created":"2026-01-27T14:29:27Z","das_tickbox":"1","_id":"21050","arxiv":1,"article_processing_charge":"No","corr_author":"1"},{"citation":{"apa":"Bhattacharjee, S., Kulkarni, S. R., Kong, A. K. H., Tam, M. S., Bond, H. E., El-Badry, K., … Riddle, R. (2025). Variability of central stars of planetary nebulae with the zwicky transient facility. I. Methods, short-timescale variables, and the unusual nucleus of WeSb 1. <i>Publications of the Astronomical Society of the Pacific</i>. IOP Publishing. <a href=\"https://doi.org/10.1088/1538-3873/ada702\">https://doi.org/10.1088/1538-3873/ada702</a>","ama":"Bhattacharjee S, Kulkarni SR, Kong AKH, et al. Variability of central stars of planetary nebulae with the zwicky transient facility. I. Methods, short-timescale variables, and the unusual nucleus of WeSb 1. <i>Publications of the Astronomical Society of the Pacific</i>. 2025;137(2). doi:<a href=\"https://doi.org/10.1088/1538-3873/ada702\">10.1088/1538-3873/ada702</a>","chicago":"Bhattacharjee, Soumyadeep, S. R. Kulkarni, Albert K.H. Kong, M. S. Tam, Howard E. Bond, Kareem El-Badry, Ilaria Caiazzo, et al. “Variability of Central Stars of Planetary Nebulae with the Zwicky Transient Facility. I. Methods, Short-Timescale Variables, and the Unusual Nucleus of WeSb 1.” <i>Publications of the Astronomical Society of the Pacific</i>. IOP Publishing, 2025. <a href=\"https://doi.org/10.1088/1538-3873/ada702\">https://doi.org/10.1088/1538-3873/ada702</a>.","ieee":"S. Bhattacharjee <i>et al.</i>, “Variability of central stars of planetary nebulae with the zwicky transient facility. I. Methods, short-timescale variables, and the unusual nucleus of WeSb 1,” <i>Publications of the Astronomical Society of the Pacific</i>, vol. 137, no. 2. IOP Publishing, 2025.","ista":"Bhattacharjee S, Kulkarni SR, Kong AKH, Tam MS, Bond HE, El-Badry K, Caiazzo I, Chornay N, Graham MJ, Rodriguez AC, Zeimann GR, Fremling C, Drake AJ, Werner K, Rodriguez H, Prince TA, Laher RR, Chen TX, Riddle R. 2025. Variability of central stars of planetary nebulae with the zwicky transient facility. I. Methods, short-timescale variables, and the unusual nucleus of WeSb 1. Publications of the Astronomical Society of the Pacific. 137(2), 024201.","mla":"Bhattacharjee, Soumyadeep, et al. “Variability of Central Stars of Planetary Nebulae with the Zwicky Transient Facility. I. Methods, Short-Timescale Variables, and the Unusual Nucleus of WeSb 1.” <i>Publications of the Astronomical Society of the Pacific</i>, vol. 137, no. 2, 024201, IOP Publishing, 2025, doi:<a href=\"https://doi.org/10.1088/1538-3873/ada702\">10.1088/1538-3873/ada702</a>.","short":"S. Bhattacharjee, S.R. Kulkarni, A.K.H. Kong, M.S. Tam, H.E. Bond, K. El-Badry, I. Caiazzo, N. Chornay, M.J. Graham, A.C. Rodriguez, G.R. Zeimann, C. Fremling, A.J. Drake, K. Werner, H. Rodriguez, T.A. Prince, R.R. Laher, T.X. Chen, R. Riddle, Publications of the Astronomical Society of the Pacific 137 (2025)."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","external_id":{"arxiv":["2410.03589"],"isi":["001416903300001"]},"volume":137,"department":[{"_id":"IlCa"}],"month":"02","article_type":"original","day":"01","has_accepted_license":"1","related_material":{"link":[{"relation":"erratum","url":"https://doi.org/10.1088/1538-3873/adbcd8"}]},"tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 3.0 Unported (CC BY 3.0)","legal_code_url":"https://creativecommons.org/licenses/by/3.0/legalcode","short":"CC BY (3.0)"},"scopus_import":"1","status":"public","file":[{"success":1,"relation":"main_file","access_level":"open_access","file_size":3657568,"checksum":"42b942ee1bf32ed225024e168174be92","file_id":"19034","file_name":"2025_PASP_Bhattacharjee.pdf","creator":"dernst","date_updated":"2025-02-17T09:13:41Z","date_created":"2025-02-17T09:13:41Z","content_type":"application/pdf"}],"publisher":"IOP Publishing","file_date_updated":"2025-02-17T09:13:41Z","oa_version":"Published Version","article_number":"024201","year":"2025","OA_type":"hybrid","quality_controlled":"1","author":[{"full_name":"Bhattacharjee, Soumyadeep","first_name":"Soumyadeep","last_name":"Bhattacharjee"},{"full_name":"Kulkarni, S. R.","last_name":"Kulkarni","first_name":"S. R."},{"first_name":"Albert K.H.","last_name":"Kong","full_name":"Kong, Albert K.H."},{"first_name":"M. S.","last_name":"Tam","full_name":"Tam, M. S."},{"full_name":"Bond, Howard E.","last_name":"Bond","first_name":"Howard E."},{"last_name":"El-Badry","first_name":"Kareem","full_name":"El-Badry, Kareem"},{"id":"8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d","full_name":"Caiazzo, Ilaria","first_name":"Ilaria","orcid":"0000-0002-4770-5388","last_name":"Caiazzo"},{"last_name":"Chornay","first_name":"Nicholas","full_name":"Chornay, Nicholas"},{"full_name":"Graham, Matthew J.","last_name":"Graham","first_name":"Matthew J."},{"first_name":"Antonio C.","last_name":"Rodriguez","full_name":"Rodriguez, Antonio C."},{"first_name":"Gregory R.","last_name":"Zeimann","full_name":"Zeimann, Gregory R."},{"last_name":"Fremling","first_name":"Christoffer","full_name":"Fremling, Christoffer"},{"full_name":"Drake, Andrew J.","last_name":"Drake","first_name":"Andrew J."},{"full_name":"Werner, Klaus","first_name":"Klaus","last_name":"Werner"},{"full_name":"Rodriguez, Hector","first_name":"Hector","last_name":"Rodriguez"},{"full_name":"Prince, Thomas A.","first_name":"Thomas A.","last_name":"Prince"},{"last_name":"Laher","first_name":"Russ R.","full_name":"Laher, Russ R."},{"full_name":"Chen, Tracy X.","first_name":"Tracy X.","last_name":"Chen"},{"first_name":"Reed","last_name":"Riddle","full_name":"Riddle, Reed"}],"isi":1,"language":[{"iso":"eng"}],"OA_place":"publisher","publication":"Publications of the Astronomical Society of the Pacific","publication_status":"published","oa":1,"acknowledgement":"This work is 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 Oskar Klein Center at Stockholm University, the University of Maryland, University of California, Berkeley, the University of Wisconsin at Milwaukee, University of Warwick, Ruhr University Bochum, Cornell University, Northwestern University, and Drexel University. Operations are conducted by COO, IPAC, and UW.\r\n\r\nThis 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.\r\n\r\nWe are grateful to the staffs of Palomar Observatory and the Hobby-Eberly Telescope for assistance with the observations and data management. The Liverpool Telescope is operated on the island of La Palma by Liverpool John Moores University in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias with financial support from the UK Science and Technology Facilities Council.\r\n\r\nThe Low-Resolution Spectrograph 2 (LRS2) on HET was developed and funded by the University of Texas at Austin McDonald Observatory and Department of Astronomy, and by Pennsylvania State University. We thank the Leibniz-Institut für Astrophysik Potsdam (AIP) and the Institut für Astrophysik Göttingen (IAG) for their contributions to the construction of the integral field units. We acknowledge the Texas Advanced Computing Center (TACC) at The University of Texas at Austin for providing high performance computing, visualization, and storage resources that have contributed to the results reported within this paper.\r\n\r\nWe thank the anonymous referee for the detailed comments, which improved the clarity of the manuscript significantly. We also thank Gunter Cibis for pointing out typographical errors in the names of a few PNe in the first draft. S.B. expresses gratitude to Kishalay De for providing the Gattini-IR and WISE data. S.B. thanks Frank J. Masci and Zachary P. Vanderbosch for useful discussions and suggestions regarding solving the issues with ZTF forced photometry on extended sources. S.B. also thanks Jim Fuller, Charles C. Steidel, Lynne Hillenbrand, and Adolfo Carvalho for useful discussions on methods and science. S.B. also thanks David O. Cook for providing access to his CLU image cutout service to generate the WeSb 1 image. S.B. acknowledges the financial support from the Wallace L. W. Sargent Graduate Fellowship during the first year of his graduate studies at Caltech. N.C. was supported through the Cancer Research UK grant A24042. S.B. thanks Martina Veresvarka for drawing our attention to the TESS light curves of WeSb 1.\r\n\r\nWe have used Python packages Numpy (Harris et al. 2020), SciPy (Virtanen et al. 2020), Matplotlib (Hunter 2007), Pandas (pandas development team 2020), Astropy (Astropy Collaboration et al. 2013, 2018), and Astroquery (Ginsburg et al. 2019) at various stages of this research.","abstract":[{"text":"A complete understanding of the central stars of planetary nebulae (CSPNe) remains elusive. Over the past several decades, time-series photometry of CSPNe has yielded significant results including, but not limited to, discoveries of nearly 100 binary systems, insights into pulsations and winds in young white dwarfs, and studies of stars undergoing very late thermal pulses. We have undertaken a systematic study of optical photometric variability of cataloged CSPNe, using the light curves from the Zwicky Transient Facility (ZTF). By applying appropriate variability metrics, we arrive at a list of 94 highly variable CSPN candidates. Based on the timescales of the light-curve activity, we classify the variables broadly into short- and long-timescale variables. In this first paper in this series, we focus on the former, which is the majority class comprising 83 objects. We report periods for six sources for the first time, and recover several known periodic variables. Among the aperiodic sources, most exhibit a jitter around a median flux with a stable amplitude, and a few show outbursts. We draw attention to WeSb 1, which shows a different kind of variability: prominent deep and aperiodic dips, resembling transits from a dust/debris disk. We find strong evidence for a binary nature of WeSb 1 (possibly an F-type subgiant companion). The compactness of the emission lines and inferred high electron densities make WeSb 1 a candidate for either an EGB 6-type planetary nucleus, or a symbiotic system inside an evolved planetary nebula, both of which are rare objects. To demonstrate further promise with ZTF, we report three additional newly identified periodic sources that do not appear in the list of highly variable sources. Finally, we also introduce a two-dimensional metric space defined by the von Neumann statistics and Pearson Skew and demonstrate its effectiveness in identifying unique variables of astrophysical interest, like WeSb 1.","lang":"eng"}],"date_published":"2025-02-01T00:00:00Z","title":"Variability of central stars of planetary nebulae with the zwicky transient facility. I. Methods, short-timescale variables, and the unusual nucleus of WeSb 1","date_updated":"2026-07-22T06:39:53Z","doi":"10.1088/1538-3873/ada702","publication_identifier":{"issn":["0004-6280"],"issnl":["0004-6280"]},"issue":"2","intvolume":"       137","das_tickbox":"1","_id":"19025","ddc":["520"],"arxiv":1,"article_processing_charge":"No","type":"journal_article","date_created":"2025-02-16T23:02:33Z"},{"day":"15","article_type":"original","status":"public","scopus_import":"1","publisher":"American Physical Society","citation":{"ista":"Tenhuisen SFR, Pan GA, Song Q, Baykusheva DR, Ferenc Segedin D, Goodge BH, Paik H, Pelliciari J, Bisogni V, Gu Y, Agrestini S, Nag A, García-Fernández M, Zhou KJ, Kourkoutis LF, Brooks CM, Mundy JA, Dean MPM, Mitrano M. 2025. Magnetic excitations in Ndn+1Nin O3n+1 Ruddlesden-Popper nickelates observed via resonant inelastic x-ray scattering. Physical Review B. 111(16), 165145.","chicago":"Tenhuisen, Sophia F.R., Grace A. Pan, Qi Song, Denitsa Rangelova Baykusheva, Dan Ferenc Segedin, Berit H. Goodge, Hanjong Paik, et al. “Magnetic Excitations in Ndn+1Nin O3n+1 Ruddlesden-Popper Nickelates Observed via Resonant Inelastic x-Ray Scattering.” <i>Physical Review B</i>. American Physical Society, 2025. <a href=\"https://doi.org/10.1103/PhysRevB.111.165145\">https://doi.org/10.1103/PhysRevB.111.165145</a>.","ama":"Tenhuisen SFR, Pan GA, Song Q, et al. Magnetic excitations in Ndn+1Nin O3n+1 Ruddlesden-Popper nickelates observed via resonant inelastic x-ray scattering. <i>Physical Review B</i>. 2025;111(16). doi:<a href=\"https://doi.org/10.1103/PhysRevB.111.165145\">10.1103/PhysRevB.111.165145</a>","ieee":"S. F. R. Tenhuisen <i>et al.</i>, “Magnetic excitations in Ndn+1Nin O3n+1 Ruddlesden-Popper nickelates observed via resonant inelastic x-ray scattering,” <i>Physical Review B</i>, vol. 111, no. 16. American Physical Society, 2025.","apa":"Tenhuisen, S. F. R., Pan, G. A., Song, Q., Baykusheva, D. R., Ferenc Segedin, D., Goodge, B. H., … Mitrano, M. (2025). Magnetic excitations in Ndn+1Nin O3n+1 Ruddlesden-Popper nickelates observed via resonant inelastic x-ray scattering. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevB.111.165145\">https://doi.org/10.1103/PhysRevB.111.165145</a>","short":"S.F.R. Tenhuisen, G.A. Pan, Q. Song, D.R. Baykusheva, D. Ferenc Segedin, B.H. Goodge, H. Paik, J. Pelliciari, V. Bisogni, Y. Gu, S. Agrestini, A. Nag, M. García-Fernández, K.J. Zhou, L.F. Kourkoutis, C.M. Brooks, J.A. Mundy, M.P.M. Dean, M. Mitrano, Physical Review B 111 (2025).","mla":"Tenhuisen, Sophia F. R., et al. “Magnetic Excitations in Ndn+1Nin O3n+1 Ruddlesden-Popper Nickelates Observed via Resonant Inelastic x-Ray Scattering.” <i>Physical Review B</i>, vol. 111, no. 16, 165145, American Physical Society, 2025, doi:<a href=\"https://doi.org/10.1103/PhysRevB.111.165145\">10.1103/PhysRevB.111.165145</a>."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","external_id":{"arxiv":["2504.07268"]},"volume":111,"month":"04","department":[{"_id":"DeBa"}],"author":[{"full_name":"Tenhuisen, Sophia F.R.","first_name":"Sophia F.R.","last_name":"Tenhuisen"},{"full_name":"Pan, Grace A.","last_name":"Pan","first_name":"Grace A."},{"last_name":"Song","first_name":"Qi","full_name":"Song, Qi"},{"first_name":"Denitsa Rangelova","orcid":"0000-0002-7438-1139","last_name":"Baykusheva","id":"71b4d059-2a03-11ee-914d-dfa3beed6530","full_name":"Baykusheva, Denitsa Rangelova"},{"full_name":"Ferenc Segedin, Dan","last_name":"Ferenc Segedin","first_name":"Dan"},{"full_name":"Goodge, Berit H.","first_name":"Berit H.","last_name":"Goodge"},{"last_name":"Paik","first_name":"Hanjong","full_name":"Paik, Hanjong"},{"full_name":"Pelliciari, Jonathan","last_name":"Pelliciari","first_name":"Jonathan"},{"full_name":"Bisogni, Valentina","first_name":"Valentina","last_name":"Bisogni"},{"first_name":"Yanhong","last_name":"Gu","full_name":"Gu, Yanhong"},{"full_name":"Agrestini, Stefano","first_name":"Stefano","last_name":"Agrestini"},{"full_name":"Nag, Abhishek","last_name":"Nag","first_name":"Abhishek"},{"full_name":"García-Fernández, Mirian","first_name":"Mirian","last_name":"García-Fernández"},{"full_name":"Zhou, Ke Jin","first_name":"Ke Jin","last_name":"Zhou"},{"last_name":"Kourkoutis","first_name":"Lena F.","full_name":"Kourkoutis, Lena F."},{"full_name":"Brooks, Charles M.","last_name":"Brooks","first_name":"Charles M."},{"last_name":"Mundy","first_name":"Julia A.","full_name":"Mundy, Julia A."},{"full_name":"Dean, Mark P.M.","first_name":"Mark P.M.","last_name":"Dean"},{"last_name":"Mitrano","first_name":"Matteo","full_name":"Mitrano, Matteo"}],"article_number":"165145","oa_version":"Preprint","OA_type":"green","year":"2025","quality_controlled":"1","abstract":[{"lang":"eng","text":"Magnetic interactions are thought to play a key role in the properties of many unconventional superconductors, including cuprates, iron pnictides, and square-planar nickelates. Superconductivity was also recently observed in the bilayer and trilayer Ruddlesden-Popper nickelates, the electronic structure of which is expected to differ from that of cuprates and square-planar nickelates. Here we study how electronic structure and magnetic interactions evolve with the number of layers, 𝑛, in thin film Ruddlesden-Popper nickelates Nd𝑛+1⁢Ni𝑛⁢O3⁢𝑛+1 with 𝑛=1,3, and 5 using resonant inelastic x-ray scattering (RIXS). The RIXS spectra are consistent with a high-spin |3⁢𝑑8⁢ 𝐿̲⟩ electronic configuration, resembling that of La2−𝑥⁢Sr𝑥⁢NiO4 and the parent perovskite, NdNiO3. The magnetic excitations soften to lower energy in the structurally self-doped, higher-𝑛 films. Our observations confirm that structural tuning is an effective route for altering electronic properties, such as magnetic superexchange, in this prominent family of materials."}],"title":"Magnetic excitations in Ndn+1Nin O3n+1 Ruddlesden-Popper nickelates observed via resonant inelastic x-ray scattering","date_published":"2025-04-15T00:00:00Z","date_updated":"2026-07-22T06:53:20Z","publication_identifier":{"eissn":["2469-9969"],"issn":["2469-9950"]},"doi":"10.1103/PhysRevB.111.165145","OA_place":"repository","language":[{"iso":"eng"}],"oa":1,"publication_status":"published","publication":"Physical Review B","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2504.07268"}],"acknowledgement":"Work by S.F.R.T., D.R.B., J.P., V.B., M.P.M.D., and M.M. was supported by the U.S. Department of Energy (DOE), Division of Materials Science, under Contract No. DE-SC0012704. G.A.P. and D.F.S. are primarily supported by the DOE, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under Grant No. DE-SC0021925, and by NSF Graduate Research Fellowship Grant No. DGE-1745303. S.F.R.T. acknowledges additional support from the DOE, Office of Science, Office of Workforce Development for Teachers and Scientists, Office of Science Graduate Student Research (SCGSR) program. The SCGSR program is administered by the Oak Ridge Institute for Science and Education for the DOE under Contract No. DE-SC0014664. G.A.P. acknowledges additional support from the Paul and Daisy Soros Fellowship for New Americans. Q.S. was supported by the Science and Technology Center for Integrated Quantum Materials, NSF Grant No. DMR-1231319. B.H.G and L.F.K. acknowledge support by PARADIM, NSF Grant No. DMR-2039380. J.A.M. acknowledges support from the DOE, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under Grant No. DE-SC0021925. Materials growth and electron microscopy were supported by PARADIM under NSF Cooperative Agreement Grant No. DMR-2039380. Electron microscopy made use of the Cornell Center for Materials Research Shared Facilities. The Thermo Fisher Spectra 300 X-CFEG was acquired with support from PARADIM, an NSF Materials Innovation Platforms (Grant No. DMR-2039380), and Cornell University. The FEI Titan Themis 300 was acquired through Grant No. NSF-MRI-1429155, with additional support from Cornell University, the Weill Institute, and the Kavli Institute at Cornell University. The Thermo Fisher Helios G4 UX FIB was acquired with support by NSF Grant No. DMR-1539918. This research used beamline 2-ID of the National Synchrotron Light Source II, a DOE Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under Contract No. DE-SC0012704. We acknowledge Diamond Light Source for time on Beamline I21 under Proposal No. MM27484.","das_tickbox":"1","_id":"19639","article_processing_charge":"No","arxiv":1,"type":"journal_article","date_created":"2025-05-04T22:02:31Z","issue":"16","intvolume":"       111"}]