---
OA_place: repository
_id: '21016'
abstract:
- lang: eng
  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.
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."
article_number: '2505.17858'
article_processing_charge: No
arxiv: 1
author:
- first_name: Yossi
  full_name: Bleile, Yossi
  id: 920a7385-7995-11ef-9bfd-8c434cd8f3c2
  last_name: Bleile
  orcid: 0000-0002-4861-9174
- first_name: Lisbeth
  full_name: Fajstrup, Lisbeth
  last_name: Fajstrup
- first_name: Teresa
  full_name: Heiss, Teresa
  id: 4879BB4E-F248-11E8-B48F-1D18A9856A87
  last_name: Heiss
  orcid: 0000-0002-1780-2689
- first_name: Anne Marie
  full_name: Svane, Anne Marie
  last_name: Svane
- first_name: Søren Strandskov
  full_name: Sørensen, Søren Strandskov
  last_name: Sørensen
citation:
  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>
  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>
  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>.
  ieee: Y. Bokor Bleile, L. Fajstrup, T. Heiss, A. M. Svane, and S. S. Sørensen, “Identifying
    cobordisms using kernel persistence,” <i>arXiv</i>. .
  ista: Bokor Bleile Y, Fajstrup L, Heiss T, Svane AM, Sørensen SS. Identifying cobordisms
    using kernel persistence. arXiv, 2505.17858.
  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>.
  short: Y. Bokor Bleile, L. Fajstrup, T. Heiss, A.M. Svane, S.S. Sørensen, ArXiv
    (n.d.).
date_created: 2026-01-20T10:12:21Z
date_published: 2025-05-23T00:00:00Z
date_updated: 2026-06-11T11:51:13Z
day: '23'
department:
- _id: HeEd
doi: 10.48550/arXiv.2505.17858
ec_funded: 1
external_id:
  arxiv:
  - '2505.17858'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2505.17858
month: '05'
oa: 1
oa_version: Preprint
project:
- _id: 266A2E9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '788183'
  name: Alpha Shape Theory Extended
publication: arXiv
publication_status: submitted
status: public
title: Identifying cobordisms using kernel persistence
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2025'
...
---
OA_place: repository
OA_type: green
_id: '20490'
abstract:
- lang: eng
  text: "We study flips in hypertriangulations of planar points sets. Here a level-k
    hypertriangulation of n\r\n points in the plane is a subdivision induced by the
    projection of a k-hypersimplex, which is the convex hull of the barycenters of
    the (k-1)-dimensional faces of the standard (n-1)-simplex. In particular, we introduce
    four types of flips and prove that the level-2 hypertriangulations are connected
    by these flips.\r\n"
acknowledgement: Work by all authors but the second is supported by the European Research
  Council (ERC), grant no. 788183, by the Wittgenstein Prize, Austrian Science Fund
  (FWF), grant no. Z 342-N31, and by the DFG Collaborative Research Center TRR 109,
  Austrian Science Fund (FWF), grant no. I 02979-N35. Work by the second author is
  partially supported by the Alexander von Humboldt Foundation and by the Simons Foundation
  . The second author thanks Jesús A. De Loera for useful discussions on flips and
  non-flips and Pavel Galashin and Alexey Balitskiy for useful discussions on plabic
  graphs.
article_number: '104248'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Alexey
  full_name: Garber, Alexey
  last_name: Garber
- first_name: Mohadese
  full_name: Ghafari, Mohadese
  last_name: Ghafari
- first_name: Teresa
  full_name: Heiss, Teresa
  id: 4879BB4E-F248-11E8-B48F-1D18A9856A87
  last_name: Heiss
  orcid: 0000-0002-1780-2689
- first_name: Morteza
  full_name: Saghafian, Morteza
  id: f86f7148-b140-11ec-9577-95435b8df824
  last_name: Saghafian
citation:
  ama: Edelsbrunner H, Garber A, Ghafari M, Heiss T, Saghafian M. Flips in two-dimensional
    hypertriangulations. <i>European Journal of Combinatorics</i>. 2025;132. doi:<a
    href="https://doi.org/10.1016/j.ejc.2025.104248">10.1016/j.ejc.2025.104248</a>
  apa: Edelsbrunner, H., Garber, A., Ghafari, M., Heiss, T., &#38; Saghafian, M. (2025).
    Flips in two-dimensional hypertriangulations. <i>European Journal of Combinatorics</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.ejc.2025.104248">https://doi.org/10.1016/j.ejc.2025.104248</a>
  chicago: Edelsbrunner, Herbert, Alexey Garber, Mohadese Ghafari, Teresa Heiss, and
    Morteza Saghafian. “Flips in Two-Dimensional Hypertriangulations.” <i>European
    Journal of Combinatorics</i>. Elsevier, 2025. <a href="https://doi.org/10.1016/j.ejc.2025.104248">https://doi.org/10.1016/j.ejc.2025.104248</a>.
  ieee: H. Edelsbrunner, A. Garber, M. Ghafari, T. Heiss, and M. Saghafian, “Flips
    in two-dimensional hypertriangulations,” <i>European Journal of Combinatorics</i>,
    vol. 132. Elsevier, 2025.
  ista: Edelsbrunner H, Garber A, Ghafari M, Heiss T, Saghafian M. 2025. Flips in
    two-dimensional hypertriangulations. European Journal of Combinatorics. 132, 104248.
  mla: Edelsbrunner, Herbert, et al. “Flips in Two-Dimensional Hypertriangulations.”
    <i>European Journal of Combinatorics</i>, vol. 132, 104248, Elsevier, 2025, doi:<a
    href="https://doi.org/10.1016/j.ejc.2025.104248">10.1016/j.ejc.2025.104248</a>.
  short: H. Edelsbrunner, A. Garber, M. Ghafari, T. Heiss, M. Saghafian, European
    Journal of Combinatorics 132 (2025).
corr_author: '1'
date_created: 2025-10-19T22:01:31Z
date_published: 2025-10-10T00:00:00Z
date_updated: 2025-12-01T12:57:29Z
day: '10'
department:
- _id: HeEd
doi: 10.1016/j.ejc.2025.104248
ec_funded: 1
external_id:
  arxiv:
  - '2212.11380'
  isi:
  - '001599061500002'
intvolume: '       132'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2212.11380
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 266A2E9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '788183'
  name: Alpha Shape Theory Extended
- _id: 268116B8-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z00342
  name: Mathematics, Computer Science
- _id: 2561EBF4-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I02979-N35
  name: Persistence and stability of geometric complexes
publication: European Journal of Combinatorics
publication_identifier:
  issn:
  - 0195-6698
publication_status: epub_ahead
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Flips in two-dimensional hypertriangulations
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 132
year: '2025'
...
---
_id: '14345'
abstract:
- lang: eng
  text: For a locally finite set in R2, the order-k Brillouin tessellations form an
    infinite sequence of convex face-to-face tilings of the plane. If the set is coarsely
    dense and generic, then the corresponding infinite sequences of minimum and maximum
    angles are both monotonic in k. As an example, a stationary Poisson point process
    in R2  is locally finite, coarsely dense, and generic with probability one. For
    such a set, the distributions of angles in the Voronoi tessellations, Delaunay
    mosaics, and Brillouin tessellations are independent of the order and can be derived
    from the formula for angles in order-1 Delaunay mosaics given by Miles (Math.
    Biosci. 6, 85–127 (1970)).
acknowledgement: Work by all authors but A. Garber is supported by the European Research
  Council (ERC), Grant No. 788183, by the Wittgenstein Prize, Austrian Science Fund
  (FWF), Grant No. Z 342-N31, and by the DFG Collaborative Research Center TRR 109,
  Austrian Science Fund (FWF), Grant No. I 02979-N35. Work by A. Garber is partially
  supported by the Alexander von Humboldt Foundation.
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Alexey
  full_name: Garber, Alexey
  last_name: Garber
- first_name: Mohadese
  full_name: Ghafari, Mohadese
  last_name: Ghafari
- first_name: Teresa
  full_name: Heiss, Teresa
  id: 4879BB4E-F248-11E8-B48F-1D18A9856A87
  last_name: Heiss
  orcid: 0000-0002-1780-2689
- first_name: Morteza
  full_name: Saghafian, Morteza
  id: f86f7148-b140-11ec-9577-95435b8df824
  last_name: Saghafian
citation:
  ama: Edelsbrunner H, Garber A, Ghafari M, Heiss T, Saghafian M. On angles in higher
    order Brillouin tessellations and related tilings in the plane. <i>Discrete and
    Computational Geometry</i>. 2024;72:29-48. doi:<a href="https://doi.org/10.1007/s00454-023-00566-1">10.1007/s00454-023-00566-1</a>
  apa: Edelsbrunner, H., Garber, A., Ghafari, M., Heiss, T., &#38; Saghafian, M. (2024).
    On angles in higher order Brillouin tessellations and related tilings in the plane.
    <i>Discrete and Computational Geometry</i>. Springer Nature. <a href="https://doi.org/10.1007/s00454-023-00566-1">https://doi.org/10.1007/s00454-023-00566-1</a>
  chicago: Edelsbrunner, Herbert, Alexey Garber, Mohadese Ghafari, Teresa Heiss, and
    Morteza Saghafian. “On Angles in Higher Order Brillouin Tessellations and Related
    Tilings in the Plane.” <i>Discrete and Computational Geometry</i>. Springer Nature,
    2024. <a href="https://doi.org/10.1007/s00454-023-00566-1">https://doi.org/10.1007/s00454-023-00566-1</a>.
  ieee: H. Edelsbrunner, A. Garber, M. Ghafari, T. Heiss, and M. Saghafian, “On angles
    in higher order Brillouin tessellations and related tilings in the plane,” <i>Discrete
    and Computational Geometry</i>, vol. 72. Springer Nature, pp. 29–48, 2024.
  ista: Edelsbrunner H, Garber A, Ghafari M, Heiss T, Saghafian M. 2024. On angles
    in higher order Brillouin tessellations and related tilings in the plane. Discrete
    and Computational Geometry. 72, 29–48.
  mla: Edelsbrunner, Herbert, et al. “On Angles in Higher Order Brillouin Tessellations
    and Related Tilings in the Plane.” <i>Discrete and Computational Geometry</i>,
    vol. 72, Springer Nature, 2024, pp. 29–48, doi:<a href="https://doi.org/10.1007/s00454-023-00566-1">10.1007/s00454-023-00566-1</a>.
  short: H. Edelsbrunner, A. Garber, M. Ghafari, T. Heiss, M. Saghafian, Discrete
    and Computational Geometry 72 (2024) 29–48.
corr_author: '1'
date_created: 2023-09-17T22:01:10Z
date_published: 2024-07-01T00:00:00Z
date_updated: 2025-04-23T08:41:59Z
day: '01'
ddc:
- '510'
department:
- _id: HeEd
doi: 10.1007/s00454-023-00566-1
ec_funded: 1
external_id:
  arxiv:
  - '2204.01076'
  isi:
  - '001060727600004'
  pmid:
  - '39610762'
file:
- access_level: open_access
  checksum: b207b4e00f904e8ea8a30e24f0251f79
  content_type: application/pdf
  creator: dernst
  date_created: 2024-07-22T09:43:19Z
  date_updated: 2024-07-22T09:43:19Z
  file_id: '17301'
  file_name: 2024_DiscreteComputGeom_Edelsbrunner.pdf
  file_size: 892019
  relation: main_file
  success: 1
file_date_updated: 2024-07-22T09:43:19Z
has_accepted_license: '1'
intvolume: '        72'
isi: 1
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '07'
oa: 1
oa_version: Published Version
page: 29-48
pmid: 1
project:
- _id: 266A2E9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '788183'
  name: Alpha Shape Theory Extended
- _id: 268116B8-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z00342
  name: Mathematics, Computer Science
- _id: 2561EBF4-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I02979-N35
  name: Persistence and stability of geometric complexes
publication: Discrete and Computational Geometry
publication_identifier:
  eissn:
  - 1432-0444
  issn:
  - 0179-5376
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: On angles in higher order Brillouin tessellations and related tilings in the
  plane
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 72
year: '2024'
...
---
_id: '17190'
abstract:
- lang: eng
  text: "For a locally finite set, \U0001D434⊆ℝ\U0001D451\r\n, the \U0001D458\r\nth
    Brillouin zone of \U0001D44E∈\U0001D434\r\n is the region of points \U0001D465∈ℝ\U0001D451\r\n
    for which ‖\U0001D465−\U0001D44E‖\r\n is the \U0001D458\r\nth smallest among the
    Euclidean distances between \U0001D465\r\n and the points in \U0001D434\r\n. If
    \U0001D434\r\n is a lattice, the \U0001D458\r\nth Brillouin zones of the points
    in \U0001D434\r\n are translates of each other, and together they tile space.
    Depending on the value of \U0001D458\r\n, they express medium- or long-range order
    in the set. We study fundamental geometric and combinatorial properties of Brillouin
    zones, focusing on the integer lattice and its perturbations. Our results include
    the stability of a Brillouin zone under perturbations, a linear upper bound on
    the number of chambers in a zone for lattices in ℝ2\r\n, and the convergence of
    the maximum volume of a chamber to zero for the integer lattice."
acknowledgement: The second author is partially supported by the Alexander von Humboldt
  Foundation. The sixth author is supported by the European Union's Horizon 2020 research
  and innovation programme under Marie Sklodowska-Curie grant agreement 754411, and
  by Austrian Science Fund(FWF) grant M-3073. All other authors are supported by European
  Research Council (ERC) grant 788183, by the Wittgenstein Prize, by Austrian Science
  Fund (FWF) grant Z 342-N31, and by the DFG Collaborative Research Center TRR 109,
  Austrian Science Fund (FWF) grant I 02979-N35.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Alexey
  full_name: Garber, Alexey
  last_name: Garber
- first_name: Mohadese
  full_name: Ghafaris, Mohadese
  last_name: Ghafaris
- first_name: Teresa
  full_name: Heiss, Teresa
  id: 4879BB4E-F248-11E8-B48F-1D18A9856A87
  last_name: Heiss
  orcid: 0000-0002-1780-2689
- first_name: Morteza
  full_name: Saghafiant, Morteza
  last_name: Saghafiant
- first_name: Mathijs
  full_name: Wintraecken, Mathijs
  id: 307CFBC8-F248-11E8-B48F-1D18A9856A87
  last_name: Wintraecken
  orcid: 0000-0002-7472-2220
citation:
  ama: Edelsbrunner H, Garber A, Ghafaris M, Heiss T, Saghafiant M, Wintraecken M.
    Brillouin zones of integer lattices and their perturbations. <i>SIAM Journal on
    Discrete Mathematics</i>. 2024;38(2):1784-1807. doi:<a href="https://doi.org/10.1137/22M1489071">10.1137/22M1489071</a>
  apa: Edelsbrunner, H., Garber, A., Ghafaris, M., Heiss, T., Saghafiant, M., &#38;
    Wintraecken, M. (2024). Brillouin zones of integer lattices and their perturbations.
    <i>SIAM Journal on Discrete Mathematics</i>. Society for Industrial and Applied
    Mathematics. <a href="https://doi.org/10.1137/22M1489071">https://doi.org/10.1137/22M1489071</a>
  chicago: Edelsbrunner, Herbert, Alexey Garber, Mohadese Ghafaris, Teresa Heiss,
    Morteza Saghafiant, and Mathijs Wintraecken. “Brillouin Zones of Integer Lattices
    and Their Perturbations.” <i>SIAM Journal on Discrete Mathematics</i>. Society
    for Industrial and Applied Mathematics, 2024. <a href="https://doi.org/10.1137/22M1489071">https://doi.org/10.1137/22M1489071</a>.
  ieee: H. Edelsbrunner, A. Garber, M. Ghafaris, T. Heiss, M. Saghafiant, and M. Wintraecken,
    “Brillouin zones of integer lattices and their perturbations,” <i>SIAM Journal
    on Discrete Mathematics</i>, vol. 38, no. 2. Society for Industrial and Applied
    Mathematics, pp. 1784–1807, 2024.
  ista: Edelsbrunner H, Garber A, Ghafaris M, Heiss T, Saghafiant M, Wintraecken M.
    2024. Brillouin zones of integer lattices and their perturbations. SIAM Journal
    on Discrete Mathematics. 38(2), 1784–1807.
  mla: Edelsbrunner, Herbert, et al. “Brillouin Zones of Integer Lattices and Their
    Perturbations.” <i>SIAM Journal on Discrete Mathematics</i>, vol. 38, no. 2, Society
    for Industrial and Applied Mathematics, 2024, pp. 1784–807, doi:<a href="https://doi.org/10.1137/22M1489071">10.1137/22M1489071</a>.
  short: H. Edelsbrunner, A. Garber, M. Ghafaris, T. Heiss, M. Saghafiant, M. Wintraecken,
    SIAM Journal on Discrete Mathematics 38 (2024) 1784–1807.
corr_author: '1'
date_created: 2024-06-30T22:01:05Z
date_published: 2024-06-07T00:00:00Z
date_updated: 2025-09-08T08:06:04Z
day: '07'
department:
- _id: HeEd
doi: 10.1137/22M1489071
ec_funded: 1
external_id:
  arxiv:
  - '2204.01077'
  isi:
  - '001292728600001'
intvolume: '        38'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2204.01077
month: '06'
oa: 1
oa_version: Preprint
page: 1784-1807
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
- _id: 266A2E9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '788183'
  name: Alpha Shape Theory Extended
- _id: fc390959-9c52-11eb-aca3-afa58bd282b2
  grant_number: M03073
  name: Learning and triangulating manifolds via collapses
- _id: 2561EBF4-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I02979-N35
  name: Persistence and stability of geometric complexes
- _id: 268116B8-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z00342
  name: Mathematics, Computer Science
publication: SIAM Journal on Discrete Mathematics
publication_identifier:
  issn:
  - 0895-4801
publication_status: published
publisher: Society for Industrial and Applied Mathematics
quality_controlled: '1'
scopus_import: '1'
status: public
title: Brillouin zones of integer lattices and their perturbations
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 38
year: '2024'
...
---
OA_place: repository
_id: '18673'
abstract:
- lang: eng
  text: "Motivated by applications to crystalline materials, we generalize the merge
    tree and the related barcode of a filtered complex to the periodic setting in
    Euclidean space. They are invariant under isometries, changing bases, and indeed
    changing lattices. In addition, we prove stability under perturbations and provide
    an algorithm that under mild geometric conditions typically satisfied by crystalline
    materials takes O((n+m)logn) time, in which n and m are the numbers of vertices
    and edges in the quotient complex, respectively.\r\n"
acknowledgement: "Both authors are partially supported by the European Research Council
  (ERC) Horizon 2020 project\r\n‘Alpha Shape Theory Extended’, grant no. 788183. The
  first author is also partially supported by the DFG\r\nCollaborative Research Center
  TRR 109, ‘Discretization in Geometry and Dynamics’, Austrian Science Fund\r\n(FWF),
  grant no. I 02979-N35."
article_processing_charge: No
arxiv: 1
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Teresa
  full_name: Heiss, Teresa
  id: 4879BB4E-F248-11E8-B48F-1D18A9856A87
  last_name: Heiss
  orcid: 0000-0002-1780-2689
citation:
  ama: Edelsbrunner H, Heiss T. Merge trees of periodic filtrations. <i>arXiv</i>.
    doi:<a href="https://doi.org/10.48550/arXiv.2408.16575">10.48550/arXiv.2408.16575</a>
  apa: Edelsbrunner, H., &#38; Heiss, T. (n.d.). Merge trees of periodic filtrations.
    <i>arXiv</i>. <a href="https://doi.org/10.48550/arXiv.2408.16575">https://doi.org/10.48550/arXiv.2408.16575</a>
  chicago: Edelsbrunner, Herbert, and Teresa Heiss. “Merge Trees of Periodic Filtrations.”
    <i>ArXiv</i>, n.d. <a href="https://doi.org/10.48550/arXiv.2408.16575">https://doi.org/10.48550/arXiv.2408.16575</a>.
  ieee: H. Edelsbrunner and T. Heiss, “Merge trees of periodic filtrations,” <i>arXiv</i>.
    .
  ista: Edelsbrunner H, Heiss T. Merge trees of periodic filtrations. arXiv, <a href="https://doi.org/10.48550/arXiv.2408.16575">10.48550/arXiv.2408.16575</a>.
  mla: Edelsbrunner, Herbert, and Teresa Heiss. “Merge Trees of Periodic Filtrations.”
    <i>ArXiv</i>, doi:<a href="https://doi.org/10.48550/arXiv.2408.16575">10.48550/arXiv.2408.16575</a>.
  short: H. Edelsbrunner, T. Heiss, ArXiv (n.d.).
corr_author: '1'
date_created: 2024-12-18T14:06:57Z
date_published: 2024-08-29T00:00:00Z
date_updated: 2026-04-07T12:54:09Z
day: '29'
department:
- _id: HeEd
doi: 10.48550/arXiv.2408.16575
ec_funded: 1
external_id:
  arxiv:
  - '2408.16575'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2408.16575
month: '08'
oa: 1
oa_version: Preprint
project:
- _id: 266A2E9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '788183'
  name: Alpha Shape Theory Extended
- _id: 2561EBF4-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I02979-N35
  name: Persistence and stability of geometric complexes
publication: arXiv
publication_status: draft
related_material:
  record:
  - id: '18667'
    relation: dissertation_contains
    status: public
status: public
title: Merge trees of periodic filtrations
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2024'
...
---
OA_place: publisher
_id: '18667'
abstract:
- lang: eng
  text: "Many chemical and physical properties of materials are determined by the
    material’s shape,\r\nfor example the size of its pores and the width of its tunnels.
    This makes materials science\r\na prime application area for geometrical and topological
    methods. Nevertheless many\r\nmethods in topological data analysis have not been
    satisfyingly extended to the needs of\r\nmaterials science. This thesis provides
    new methods and new mathematical theorems\r\ntargeted at those specific needs
    by answering four different research questions. While the\r\nmotivation for each
    of the research questions arises from materials science, the methods\r\nare versatile
    and can be applied in different areas as well. \r\n\r\nThe first research question
    is concerned with image data, for example a three-dimensional\r\ncomputed tomography
    (CT) scan of a material, like sand or stone. There are two commonly\r\nused topologies
    for digital images and depending on the application either of them might be\r\nrequired.
    However, software for computing the topological data analysis method persistence\r\nhomology,
    usually supports only one of the two topologies. We answer the question how to\r\ncompute
    persistent homology of an image with respect to one of the two topologies using\r\nsoftware
    that is intended for the other topology. \r\n\r\nThe second research question
    is concerned with image data as well, and asks how much\r\nof the topological
    information of an image is lost when the resolution is coarsened. As\r\ncomputer
    tomography scanners are more expensive the higher the resolution, it is an\r\nimportant
    question in materials science to know which resolution is enough to get satisfying\r\npersistent
    homology. We give theoretical bounds on the information loss based on different\r\ngeometrical
    properties of the object to be scanned. In addition, we conduct experiments on\r\nsand
    and stone CT image data. \r\n\r\nThe third research question is motivated by comparing
    crystalline materials efficiently. As\r\nthe atoms within a crystal repeat periodically,
    crystalline materials are either modeled by\r\nunmanageable infinite periodic
    point sets, or by one of their fundamental domains, which is\r\nunstable under
    perturbation. Therefore a fingerprint of crystalline materials is needed, with\r\nappropriate
    properties such that comparing the crystals can be eased by comparing the\r\nfingerprints
    instead. We define the density fingerprint and prove the necessary properties.
    \r\n\r\nThe fourth research question is motivated by studying the hole-structure
    or connectedness,\r\ni.e. persistent homology or merge trees, of crystalline materials.
    A common way to deal\r\nwith periodicity is to take a fundamental domain and identify
    opposite boundaries to form a\r\ntorus. However, computing persistent homology
    or merge trees on that torus loses some\r\nof the information materials scientists
    are interested in and is additionally not stable under\r\ncertain noise. We therefore
    decorate the merge tree stemming from the torus with additional\r\ninformation
    describing the density and growth rate of the periodic copies of a component\r\nwithin
    a growing spherical window. We prove all desired properties, like stability and
    efficient\r\ncomputability."
acknowledgement: "I was supported by the European Research Council (ERC) Horizon 2020
  project\r\n“Alpha Shape Theory Extended” No. 788183 and by the Pöttinger Scholarship.
  In addition,\r\nI am very thankful for having been able to attend the second Workshop
  for Women in\r\nComputational Topology in July 2019, funded by the Mathematical
  Sciences Institute at\r\nANU, the US National Science Foundation through the award
  CCF-1841455, the Australian\r\nMathematical Sciences Institute and the Association
  for Women in Mathematics. Two of the\r\nprojects presented in this thesis started
  there. One of them reached completion thanks to\r\nfunding from the MSRI Summer
  Research in Mathematics program awarded to me and my\r\ncollaborators in 2020."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Teresa
  full_name: Heiss, Teresa
  id: 4879BB4E-F248-11E8-B48F-1D18A9856A87
  last_name: Heiss
  orcid: 0000-0002-1780-2689
citation:
  ama: Heiss T. New methods for applying topological data analysis to materials science.
    2024. doi:<a href="https://doi.org/10.15479/at:ista:18667">10.15479/at:ista:18667</a>
  apa: Heiss, T. (2024). <i>New methods for applying topological data analysis to
    materials science</i>. Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:18667">https://doi.org/10.15479/at:ista:18667</a>
  chicago: Heiss, Teresa. “New Methods for Applying Topological Data Analysis to Materials
    Science.” Institute of Science and Technology Austria, 2024. <a href="https://doi.org/10.15479/at:ista:18667">https://doi.org/10.15479/at:ista:18667</a>.
  ieee: T. Heiss, “New methods for applying topological data analysis to materials
    science,” Institute of Science and Technology Austria, 2024.
  ista: Heiss T. 2024. New methods for applying topological data analysis to materials
    science. Institute of Science and Technology Austria.
  mla: Heiss, Teresa. <i>New Methods for Applying Topological Data Analysis to Materials
    Science</i>. Institute of Science and Technology Austria, 2024, doi:<a href="https://doi.org/10.15479/at:ista:18667">10.15479/at:ista:18667</a>.
  short: T. Heiss, New Methods for Applying Topological Data Analysis to Materials
    Science, Institute of Science and Technology Austria, 2024.
corr_author: '1'
date_created: 2024-12-17T16:17:55Z
date_published: 2024-12-17T00:00:00Z
date_updated: 2026-07-07T13:43:27Z
day: '17'
ddc:
- '514'
- '516'
- '004'
degree_awarded: PhD
department:
- _id: GradSch
- _id: HeEd
doi: 10.15479/at:ista:18667
ec_funded: 1
file:
- access_level: open_access
  checksum: 247bb057aed2fba1cd4711917aaa2d77
  content_type: application/pdf
  creator: theiss
  date_created: 2024-12-19T10:24:46Z
  date_updated: 2024-12-19T10:24:46Z
  file_id: '18686'
  file_name: Teresa_Heiss_PhD_Thesis_final.pdf
  file_size: 7752253
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  success: 1
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  checksum: 9648b45c07a008ee11a07f99856a139d
  content_type: application/zip
  creator: theiss
  date_created: 2024-12-19T10:24:50Z
  date_updated: 2024-12-19T10:24:50Z
  file_id: '18687'
  file_name: PhD_Thesis.zip
  file_size: 17197731
  relation: source_file
file_date_updated: 2024-12-19T10:24:50Z
has_accepted_license: '1'
keyword:
- persistent homology
- topological data analysis
- periodic
- crystalline materials
- images
- fingerprint
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
page: '111'
project:
- _id: 266A2E9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '788183'
  name: Alpha Shape Theory Extended
publication_identifier:
  isbn:
  - 978-3-99078-052-7
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '10828'
    relation: part_of_dissertation
    status: public
  - id: '11440'
    relation: part_of_dissertation
    status: public
  - id: '18673'
    relation: part_of_dissertation
    status: public
  - id: '9345'
    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
title: New methods for applying topological data analysis to materials science
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2024'
...
---
_id: '10828'
abstract:
- lang: eng
  text: Digital images enable quantitative analysis of material properties at micro
    and macro length scales, but choosing an appropriate resolution when acquiring
    the image is challenging. A high resolution means longer image acquisition and
    larger data requirements for a given sample, but if the resolution is too low,
    significant information may be lost. This paper studies the impact of changes
    in resolution on persistent homology, a tool from topological data analysis that
    provides a signature of structure in an image across all length scales. Given
    prior information about a function, the geometry of an object, or its density
    distribution at a given resolution, we provide methods to select the coarsest
    resolution yielding results within an acceptable tolerance. We present numerical
    case studies for an illustrative synthetic example and samples from porous materials
    where the theoretical bounds are unknown.
article_processing_charge: No
arxiv: 1
author:
- first_name: Teresa
  full_name: Heiss, Teresa
  id: 4879BB4E-F248-11E8-B48F-1D18A9856A87
  last_name: Heiss
  orcid: 0000-0002-1780-2689
- first_name: Sarah
  full_name: Tymochko, Sarah
  last_name: Tymochko
- first_name: Brittany
  full_name: Story, Brittany
  last_name: Story
- first_name: Adélie
  full_name: Garin, Adélie
  last_name: Garin
- first_name: Hoa
  full_name: Bui, Hoa
  last_name: Bui
- first_name: Bea
  full_name: Bleile, Bea
  last_name: Bleile
- first_name: Vanessa
  full_name: Robins, Vanessa
  last_name: Robins
citation:
  ama: 'Heiss T, Tymochko S, Story B, et al. The impact of changes in resolution on
    the persistent homology of images. In: <i>2021 IEEE International Conference on
    Big Data</i>. IEEE; 2022:3824-3834. doi:<a href="https://doi.org/10.1109/BigData52589.2021.9671483">10.1109/BigData52589.2021.9671483</a>'
  apa: 'Heiss, T., Tymochko, S., Story, B., Garin, A., Bui, H., Bleile, B., &#38;
    Robins, V. (2022). The impact of changes in resolution on the persistent homology
    of images. In <i>2021 IEEE International Conference on Big Data</i> (pp. 3824–3834).
    Orlando, FL, United States; Virtuell: IEEE. <a href="https://doi.org/10.1109/BigData52589.2021.9671483">https://doi.org/10.1109/BigData52589.2021.9671483</a>'
  chicago: Heiss, Teresa, Sarah Tymochko, Brittany Story, Adélie Garin, Hoa Bui, Bea
    Bleile, and Vanessa Robins. “The Impact of Changes in Resolution on the Persistent
    Homology of Images.” In <i>2021 IEEE International Conference on Big Data</i>,
    3824–34. IEEE, 2022. <a href="https://doi.org/10.1109/BigData52589.2021.9671483">https://doi.org/10.1109/BigData52589.2021.9671483</a>.
  ieee: T. Heiss <i>et al.</i>, “The impact of changes in resolution on the persistent
    homology of images,” in <i>2021 IEEE International Conference on Big Data</i>,
    Orlando, FL, United States; Virtuell, 2022, pp. 3824–3834.
  ista: 'Heiss T, Tymochko S, Story B, Garin A, Bui H, Bleile B, Robins V. 2022. The
    impact of changes in resolution on the persistent homology of images. 2021 IEEE
    International Conference on Big Data. Big Data: International Conference on Big
    Data, 3824–3834.'
  mla: Heiss, Teresa, et al. “The Impact of Changes in Resolution on the Persistent
    Homology of Images.” <i>2021 IEEE International Conference on Big Data</i>, IEEE,
    2022, pp. 3824–34, doi:<a href="https://doi.org/10.1109/BigData52589.2021.9671483">10.1109/BigData52589.2021.9671483</a>.
  short: T. Heiss, S. Tymochko, B. Story, A. Garin, H. Bui, B. Bleile, V. Robins,
    in:, 2021 IEEE International Conference on Big Data, IEEE, 2022, pp. 3824–3834.
conference:
  end_date: 2021-12-18
  location: Orlando, FL, United States; Virtuell
  name: 'Big Data: International Conference on Big Data'
  start_date: 2021-12-15
date_created: 2022-03-06T23:01:53Z
date_published: 2022-01-13T00:00:00Z
date_updated: 2026-04-07T12:54:09Z
day: '13'
department:
- _id: HeEd
doi: 10.1109/BigData52589.2021.9671483
external_id:
  arxiv:
  - '2111.05663'
  isi:
  - '000800559503126'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2111.05663
month: '01'
oa: 1
oa_version: Preprint
page: 3824-3834
publication: 2021 IEEE International Conference on Big Data
publication_identifier:
  isbn:
  - '9781665439022'
publication_status: published
publisher: IEEE
quality_controlled: '1'
related_material:
  record:
  - id: '18667'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: The impact of changes in resolution on the persistent homology of images
type: conference
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
year: '2022'
...
---
_id: '11440'
abstract:
- lang: eng
  text: To compute the persistent homology of a grayscale digital image one needs
    to build a simplicial or cubical complex from it. For cubical complexes, the two
    commonly used constructions (corresponding to direct and indirect digital adjacencies)
    can give different results for the same image. The two constructions are almost
    dual to each other, and we use this relationship to extend and modify the cubical
    complexes to become dual filtered cell complexes. We derive a general relationship
    between the persistent homology of two dual filtered cell complexes, and also
    establish how various modifications to a filtered complex change the persistence
    diagram. Applying these results to images, we derive a method to transform the
    persistence diagram computed using one type of cubical complex into a persistence
    diagram for the other construction. This means software for computing persistent
    homology from images can now be easily adapted to produce results for either of
    the two cubical complex constructions without additional low-level code implementation.
acknowledgement: This project started during the Women in Computational Topology workshop
  held in Canberra in July of 2019. All authors are very grateful for its organisation
  and the financial support for the workshop from the Mathematical Sciences Institute
  at ANU, the US National Science Foundation through the award CCF-1841455, the Australian
  Mathematical Sciences Institute and the Association for Women in Mathematics. AG
  is supported by the Swiss National Science Foundation grant CRSII5_177237. TH is
  supported by the European Research Council (ERC) Horizon 2020 project “Alpha Shape
  Theory Extended” No. 788183. KM is supported by the ERC Horizon 2020 research and
  innovation programme under the Marie Sklodowska-Curie grant agreement No. 859860.
  VR was supported by Australian Research Council Future Fellowship FT140100604 during
  the early stages of this project.
alternative_title:
- Association for Women in Mathematics Series
article_processing_charge: No
arxiv: 1
author:
- first_name: Bea
  full_name: Bleile, Bea
  last_name: Bleile
- first_name: Adélie
  full_name: Garin, Adélie
  last_name: Garin
- first_name: Teresa
  full_name: Heiss, Teresa
  id: 4879BB4E-F248-11E8-B48F-1D18A9856A87
  last_name: Heiss
  orcid: 0000-0002-1780-2689
- first_name: Kelly
  full_name: Maggs, Kelly
  last_name: Maggs
- first_name: Vanessa
  full_name: Robins, Vanessa
  last_name: Robins
citation:
  ama: 'Bleile B, Garin A, Heiss T, Maggs K, Robins V. The persistent homology of
    dual digital image constructions. In: Gasparovic E, Robins V, Turner K, eds. <i>Research
    in Computational Topology 2</i>. Vol 30. 1st ed. AWMS. Cham: Springer Nature;
    2022:1-26. doi:<a href="https://doi.org/10.1007/978-3-030-95519-9_1">10.1007/978-3-030-95519-9_1</a>'
  apa: 'Bleile, B., Garin, A., Heiss, T., Maggs, K., &#38; Robins, V. (2022). The
    persistent homology of dual digital image constructions. In E. Gasparovic, V.
    Robins, &#38; K. Turner (Eds.), <i>Research in Computational Topology 2</i> (1st
    ed., Vol. 30, pp. 1–26). Cham: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-95519-9_1">https://doi.org/10.1007/978-3-030-95519-9_1</a>'
  chicago: 'Bleile, Bea, Adélie Garin, Teresa Heiss, Kelly Maggs, and Vanessa Robins.
    “The Persistent Homology of Dual Digital Image Constructions.” In <i>Research
    in Computational Topology 2</i>, edited by Ellen Gasparovic, Vanessa Robins, and
    Katharine Turner, 1st ed., 30:1–26. AWMS. Cham: Springer Nature, 2022. <a href="https://doi.org/10.1007/978-3-030-95519-9_1">https://doi.org/10.1007/978-3-030-95519-9_1</a>.'
  ieee: 'B. Bleile, A. Garin, T. Heiss, K. Maggs, and V. Robins, “The persistent homology
    of dual digital image constructions,” in <i>Research in Computational Topology
    2</i>, 1st ed., vol. 30, E. Gasparovic, V. Robins, and K. Turner, Eds. Cham: Springer
    Nature, 2022, pp. 1–26.'
  ista: 'Bleile B, Garin A, Heiss T, Maggs K, Robins V. 2022.The persistent homology
    of dual digital image constructions. In: Research in Computational Topology 2.
    Association for Women in Mathematics Series, vol. 30, 1–26.'
  mla: Bleile, Bea, et al. “The Persistent Homology of Dual Digital Image Constructions.”
    <i>Research in Computational Topology 2</i>, edited by Ellen Gasparovic et al.,
    1st ed., vol. 30, Springer Nature, 2022, pp. 1–26, doi:<a href="https://doi.org/10.1007/978-3-030-95519-9_1">10.1007/978-3-030-95519-9_1</a>.
  short: B. Bleile, A. Garin, T. Heiss, K. Maggs, V. Robins, in:, E. Gasparovic, V.
    Robins, K. Turner (Eds.), Research in Computational Topology 2, 1st ed., Springer
    Nature, Cham, 2022, pp. 1–26.
date_created: 2022-06-07T08:21:11Z
date_published: 2022-01-27T00:00:00Z
date_updated: 2026-04-07T12:54:09Z
day: '27'
department:
- _id: HeEd
doi: 10.1007/978-3-030-95519-9_1
ec_funded: 1
edition: '1'
editor:
- first_name: Ellen
  full_name: Gasparovic, Ellen
  last_name: Gasparovic
- first_name: Vanessa
  full_name: Robins, Vanessa
  last_name: Robins
- first_name: Katharine
  full_name: Turner, Katharine
  last_name: Turner
external_id:
  arxiv:
  - '2102.11397'
intvolume: '        30'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: ' https://doi.org/10.48550/arXiv.2102.11397'
month: '01'
oa: 1
oa_version: Preprint
page: 1-26
place: Cham
project:
- _id: 266A2E9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '788183'
  name: Alpha Shape Theory Extended
publication: Research in Computational Topology 2
publication_identifier:
  eisbn:
  - '9783030955199'
  isbn:
  - '9783030955182'
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '18667'
    relation: dissertation_contains
    status: public
scopus_import: '1'
series_title: AWMS
status: public
title: The persistent homology of dual digital image constructions
type: book_chapter
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 30
year: '2022'
...
---
_id: '10071'
alternative_title:
- Early Career
article_processing_charge: No
article_type: letter_note
author:
- first_name: Henry
  full_name: Adams, Henry
  last_name: Adams
- first_name: Hana
  full_name: Kourimska, Hana
  id: D9B8E14C-3C26-11EA-98F5-1F833DDC885E
  last_name: Kourimska
  orcid: 0000-0001-7841-0091
- first_name: Teresa
  full_name: Heiss, Teresa
  id: 4879BB4E-F248-11E8-B48F-1D18A9856A87
  last_name: Heiss
  orcid: 0000-0002-1780-2689
- first_name: Sarah
  full_name: Percival, Sarah
  last_name: Percival
- first_name: Lori
  full_name: Ziegelmeier, Lori
  last_name: Ziegelmeier
citation:
  ama: Adams H, Kourimska H, Heiss T, Percival S, Ziegelmeier L. How to tutorial-a-thon.
    <i>Notices of the American Mathematical Society</i>. 2021;68(9):1511-1514. doi:<a
    href="https://doi.org/10.1090/noti2349">10.1090/noti2349</a>
  apa: Adams, H., Kourimska, H., Heiss, T., Percival, S., &#38; Ziegelmeier, L. (2021).
    How to tutorial-a-thon. <i>Notices of the American Mathematical Society</i>. American
    Mathematical Society. <a href="https://doi.org/10.1090/noti2349">https://doi.org/10.1090/noti2349</a>
  chicago: Adams, Henry, Hana Kourimska, Teresa Heiss, Sarah Percival, and Lori Ziegelmeier.
    “How to Tutorial-a-Thon.” <i>Notices of the American Mathematical Society</i>.
    American Mathematical Society, 2021. <a href="https://doi.org/10.1090/noti2349">https://doi.org/10.1090/noti2349</a>.
  ieee: H. Adams, H. Kourimska, T. Heiss, S. Percival, and L. Ziegelmeier, “How to
    tutorial-a-thon,” <i>Notices of the American Mathematical Society</i>, vol. 68,
    no. 9. American Mathematical Society, pp. 1511–1514, 2021.
  ista: Adams H, Kourimska H, Heiss T, Percival S, Ziegelmeier L. 2021. How to tutorial-a-thon.
    Notices of the American Mathematical Society. 68(9), 1511–1514.
  mla: Adams, Henry, et al. “How to Tutorial-a-Thon.” <i>Notices of the American Mathematical
    Society</i>, vol. 68, no. 9, American Mathematical Society, 2021, pp. 1511–14,
    doi:<a href="https://doi.org/10.1090/noti2349">10.1090/noti2349</a>.
  short: H. Adams, H. Kourimska, T. Heiss, S. Percival, L. Ziegelmeier, Notices of
    the American Mathematical Society 68 (2021) 1511–1514.
date_created: 2021-10-03T22:01:22Z
date_published: 2021-10-01T00:00:00Z
date_updated: 2026-06-18T08:36:13Z
day: '01'
ddc:
- '500'
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- _id: HeEd
doi: 10.1090/noti2349
intvolume: '        68'
issue: '9'
language:
- iso: eng
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  url: http://www.ams.org/notices/
month: '10'
oa: 1
oa_version: Published Version
page: 1511-1514
publication: Notices of the American Mathematical Society
publication_identifier:
  eissn:
  - 1088-9477
  issn:
  - 0002-9920
publication_status: published
publisher: American Mathematical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: How to tutorial-a-thon
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 68
year: '2021'
...
---
_id: '9345'
abstract:
- lang: eng
  text: Modeling a crystal as a periodic point set, we present a fingerprint consisting
    of density functionsthat facilitates the efficient search for new materials and
    material properties. We prove invarianceunder isometries, continuity, and completeness
    in the generic case, which are necessary featuresfor the reliable comparison of
    crystals. The proof of continuity integrates methods from discretegeometry and
    lattice theory, while the proof of generic completeness combines techniques fromgeometry
    with analysis. The fingerprint has a fast algorithm based on Brillouin zones and
    relatedinclusion-exclusion formulae. We have implemented the algorithm and describe
    its application tocrystal structure prediction.
acknowledgement: The authors thank Janos Pach for insightful discussions on the topic
  of thispaper, Morteza Saghafian for finding the one-dimensional counterexample mentioned
  in Section 5,and Larry Andrews for generously sharing his crystallographic perspective.
alternative_title:
- LIPIcs
article_processing_charge: No
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Teresa
  full_name: Heiss, Teresa
  id: 4879BB4E-F248-11E8-B48F-1D18A9856A87
  last_name: Heiss
  orcid: 0000-0002-1780-2689
- first_name: Vitaliy
  full_name: ' Kurlin , Vitaliy'
  last_name: ' Kurlin '
- first_name: Philip
  full_name: Smith, Philip
  last_name: Smith
- first_name: Mathijs
  full_name: Wintraecken, Mathijs
  id: 307CFBC8-F248-11E8-B48F-1D18A9856A87
  last_name: Wintraecken
  orcid: 0000-0002-7472-2220
citation:
  ama: 'Edelsbrunner H, Heiss T,  Kurlin  V, Smith P, Wintraecken M. The density fingerprint
    of a periodic point set. In: <i>37th International Symposium on Computational
    Geometry</i>. Vol 189. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2021:32:1-32:16.
    doi:<a href="https://doi.org/10.4230/LIPIcs.SoCG.2021.32">10.4230/LIPIcs.SoCG.2021.32</a>'
  apa: 'Edelsbrunner, H., Heiss, T.,  Kurlin , V., Smith, P., &#38; Wintraecken, M.
    (2021). The density fingerprint of a periodic point set. In <i>37th International
    Symposium on Computational Geometry</i> (Vol. 189, p. 32:1-32:16). Virtual: Schloss
    Dagstuhl - Leibniz-Zentrum für Informatik. <a href="https://doi.org/10.4230/LIPIcs.SoCG.2021.32">https://doi.org/10.4230/LIPIcs.SoCG.2021.32</a>'
  chicago: Edelsbrunner, Herbert, Teresa Heiss, Vitaliy  Kurlin , Philip Smith, and
    Mathijs Wintraecken. “The Density Fingerprint of a Periodic Point Set.” In <i>37th
    International Symposium on Computational Geometry</i>, 189:32:1-32:16. Schloss
    Dagstuhl - Leibniz-Zentrum für Informatik, 2021. <a href="https://doi.org/10.4230/LIPIcs.SoCG.2021.32">https://doi.org/10.4230/LIPIcs.SoCG.2021.32</a>.
  ieee: H. Edelsbrunner, T. Heiss, V.  Kurlin , P. Smith, and M. Wintraecken, “The
    density fingerprint of a periodic point set,” in <i>37th International Symposium
    on Computational Geometry</i>, Virtual, 2021, vol. 189, p. 32:1-32:16.
  ista: 'Edelsbrunner H, Heiss T,  Kurlin  V, Smith P, Wintraecken M. 2021. The density
    fingerprint of a periodic point set. 37th International Symposium on Computational
    Geometry. SoCG: Symposium on Computational Geometry, LIPIcs, vol. 189, 32:1-32:16.'
  mla: Edelsbrunner, Herbert, et al. “The Density Fingerprint of a Periodic Point
    Set.” <i>37th International Symposium on Computational Geometry</i>, vol. 189,
    Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021, p. 32:1-32:16, doi:<a
    href="https://doi.org/10.4230/LIPIcs.SoCG.2021.32">10.4230/LIPIcs.SoCG.2021.32</a>.
  short: H. Edelsbrunner, T. Heiss, V.  Kurlin , P. Smith, M. Wintraecken, in:, 37th
    International Symposium on Computational Geometry, Schloss Dagstuhl - Leibniz-Zentrum
    für Informatik, 2021, p. 32:1-32:16.
conference:
  end_date: 2021-06-11
  location: Virtual
  name: 'SoCG: Symposium on Computational Geometry'
  start_date: 2021-06-07
das_tickbox: '1'
date_created: 2021-04-22T08:09:58Z
date_published: 2021-06-02T00:00:00Z
date_updated: 2026-07-07T13:43:27Z
day: '02'
ddc:
- '004'
- '516'
department:
- _id: HeEd
doi: 10.4230/LIPIcs.SoCG.2021.32
ec_funded: 1
file:
- access_level: open_access
  checksum: 1787baef1523d6d93753b90d0c109a6d
  content_type: application/pdf
  creator: mwintrae
  date_created: 2021-04-22T08:08:14Z
  date_updated: 2021-04-22T08:08:14Z
  file_id: '9346'
  file_name: df_socg_final_version.pdf
  file_size: 3117435
  relation: main_file
  success: 1
file_date_updated: 2021-04-22T08:08:14Z
has_accepted_license: '1'
intvolume: '       189'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 32:1-32:16
project:
- _id: 266A2E9E-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '788183'
  name: Alpha Shape Theory Extended
- _id: 0aa4bc98-070f-11eb-9043-e6fff9c6a316
  grant_number: I4887
  name: Persistent Homology, Algorithms and Stochastic Geometry
- _id: 25C5A090-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z00312
  name: Synaptic communication in neuronal microcircuits
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
publication: 37th International Symposium on Computational Geometry
publication_identifier:
  issn:
  - 1868-8969
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
related_material:
  record:
  - id: '18667'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: The density fingerprint of a periodic point set
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 189
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...
---
_id: '833'
abstract:
- lang: eng
  text: We present an efficient algorithm to compute Euler characteristic curves of
    gray scale images of arbitrary dimension. In various applications the Euler characteristic
    curve is used as a descriptor of an image. Our algorithm is the first streaming
    algorithm for Euler characteristic curves. The usage of streaming removes the
    necessity to store the entire image in RAM. Experiments show that our implementation
    handles terabyte scale images on commodity hardware. Due to lock-free parallelism,
    it scales well with the number of processor cores. Additionally, we put the concept
    of the Euler characteristic curve in the wider context of computational topology.
    In particular, we explain the connection with persistence diagrams.
alternative_title:
- LNCS
article_processing_charge: No
arxiv: 1
author:
- first_name: Teresa
  full_name: Heiss, Teresa
  id: 4879BB4E-F248-11E8-B48F-1D18A9856A87
  last_name: Heiss
  orcid: 0000-0002-1780-2689
- first_name: Hubert
  full_name: Wagner, Hubert
  id: 379CA8B8-F248-11E8-B48F-1D18A9856A87
  last_name: Wagner
citation:
  ama: 'Heiss T, Wagner H. Streaming algorithm for Euler characteristic curves of
    multidimensional images. In: Felsberg M, Heyden A, Krüger N, eds. Vol 10424. Springer;
    2017:397-409. doi:<a href="https://doi.org/10.1007/978-3-319-64689-3_32">10.1007/978-3-319-64689-3_32</a>'
  apa: 'Heiss, T., &#38; Wagner, H. (2017). Streaming algorithm for Euler characteristic
    curves of multidimensional images. In M. Felsberg, A. Heyden, &#38; N. Krüger
    (Eds.) (Vol. 10424, pp. 397–409). Presented at the CAIP: Computer Analysis of
    Images and Patterns, Ystad, Sweden: Springer. <a href="https://doi.org/10.1007/978-3-319-64689-3_32">https://doi.org/10.1007/978-3-319-64689-3_32</a>'
  chicago: Heiss, Teresa, and Hubert Wagner. “Streaming Algorithm for Euler Characteristic
    Curves of Multidimensional Images.” edited by Michael Felsberg, Anders Heyden,
    and Norbert Krüger, 10424:397–409. Springer, 2017. <a href="https://doi.org/10.1007/978-3-319-64689-3_32">https://doi.org/10.1007/978-3-319-64689-3_32</a>.
  ieee: 'T. Heiss and H. Wagner, “Streaming algorithm for Euler characteristic curves
    of multidimensional images,” presented at the CAIP: Computer Analysis of Images
    and Patterns, Ystad, Sweden, 2017, vol. 10424, pp. 397–409.'
  ista: 'Heiss T, Wagner H. 2017. Streaming algorithm for Euler characteristic curves
    of multidimensional images. CAIP: Computer Analysis of Images and Patterns, LNCS,
    vol. 10424, 397–409.'
  mla: Heiss, Teresa, and Hubert Wagner. <i>Streaming Algorithm for Euler Characteristic
    Curves of Multidimensional Images</i>. Edited by Michael Felsberg et al., vol.
    10424, Springer, 2017, pp. 397–409, doi:<a href="https://doi.org/10.1007/978-3-319-64689-3_32">10.1007/978-3-319-64689-3_32</a>.
  short: T. Heiss, H. Wagner, in:, M. Felsberg, A. Heyden, N. Krüger (Eds.), Springer,
    2017, pp. 397–409.
conference:
  end_date: 2017-08-24
  location: Ystad, Sweden
  name: 'CAIP: Computer Analysis of Images and Patterns'
  start_date: 2017-08-22
corr_author: '1'
date_created: 2018-12-11T11:48:45Z
date_published: 2017-07-28T00:00:00Z
date_updated: 2025-06-04T09:54:22Z
day: '28'
department:
- _id: HeEd
doi: 10.1007/978-3-319-64689-3_32
editor:
- first_name: Michael
  full_name: Felsberg, Michael
  last_name: Felsberg
- first_name: Anders
  full_name: Heyden, Anders
  last_name: Heyden
- first_name: Norbert
  full_name: Krüger, Norbert
  last_name: Krüger
external_id:
  arxiv:
  - '1705.02045'
  isi:
  - '000432085900032'
intvolume: '     10424'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1705.02045
month: '07'
oa: 1
oa_version: Submitted Version
page: 397 - 409
publication_identifier:
  issn:
  - 0302-9743
publication_status: published
publisher: Springer
publist_id: '6815'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Streaming algorithm for Euler characteristic curves of multidimensional images
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 10424
year: '2017'
...
