---
_id: '193'
abstract:
- lang: eng
  text: 'We show attacks on five data-independent memory-hard functions (iMHF) that
    were submitted to the password hashing competition (PHC). Informally, an MHF is
    a function which cannot be evaluated on dedicated hardware, like ASICs, at significantly
    lower hardware and/or energy cost than evaluating a single instance on a standard
    single-core architecture. Data-independent means the memory access pattern of
    the function is independent of the input; this makes iMHFs harder to construct
    than data-dependent ones, but the latter can be attacked by various side-channel
    attacks. Following [Alwen-Blocki''16], we capture the evaluation of an iMHF as
    a directed acyclic graph (DAG). The cumulative parallel pebbling complexity of
    this DAG is a measure for the hardware cost of evaluating the iMHF on an ASIC.
    Ideally, one would like the complexity of a DAG underlying an iMHF to be as close
    to quadratic in the number of nodes of the graph as possible. Instead, we show
    that (the DAGs underlying) the following iMHFs are far from this bound: Rig.v2,
    TwoCats and Gambit each having an exponent no more than 1.75. Moreover, we show
    that the complexity of the iMHF modes of the PHC finalists Pomelo and Lyra2 have
    exponents at most 1.83 and 1.67 respectively. To show this we investigate a combinatorial
    property of each underlying DAG (called its depth-robustness. By establishing
    upper bounds on this property we are then able to apply the general technique
    of [Alwen-Block''16] for analyzing the hardware costs of an iMHF.'
acknowledgement: Leonid Reyzin was supported in part by IST Austria and by US NSF
  grants 1012910, 1012798, and 1422965; this research was performed while he was visiting
  IST Austria.
article_processing_charge: No
author:
- first_name: Joel F
  full_name: Alwen, Joel F
  id: 2A8DFA8C-F248-11E8-B48F-1D18A9856A87
  last_name: Alwen
- first_name: Peter
  full_name: Gazi, Peter
  last_name: Gazi
- first_name: Chethan
  full_name: Kamath Hosdurg, Chethan
  id: 4BD3F30E-F248-11E8-B48F-1D18A9856A87
  last_name: Kamath Hosdurg
- first_name: Karen
  full_name: Klein, Karen
  id: 3E83A2F8-F248-11E8-B48F-1D18A9856A87
  last_name: Klein
- first_name: Georg F
  full_name: Osang, Georg F
  id: 464B40D6-F248-11E8-B48F-1D18A9856A87
  last_name: Osang
  orcid: 0000-0002-8882-5116
- first_name: Krzysztof Z
  full_name: Pietrzak, Krzysztof Z
  id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87
  last_name: Pietrzak
  orcid: 0000-0002-9139-1654
- first_name: Lenoid
  full_name: Reyzin, Lenoid
  last_name: Reyzin
- first_name: Michal
  full_name: Rolinek, Michal
  id: 3CB3BC06-F248-11E8-B48F-1D18A9856A87
  last_name: Rolinek
- first_name: Michal
  full_name: Rybar, Michal
  id: 2B3E3DE8-F248-11E8-B48F-1D18A9856A87
  last_name: Rybar
citation:
  ama: 'Alwen JF, Gazi P, Kamath Hosdurg C, et al. On the memory hardness of data
    independent password hashing functions. In: <i>Proceedings of the 2018 on Asia
    Conference on Computer and Communication Security</i>. ACM; 2018:51-65. doi:<a
    href="https://doi.org/10.1145/3196494.3196534">10.1145/3196494.3196534</a>'
  apa: 'Alwen, J. F., Gazi, P., Kamath Hosdurg, C., Klein, K., Osang, G. F., Pietrzak,
    K. Z., … Rybar, M. (2018). On the memory hardness of data independent password
    hashing functions. In <i>Proceedings of the 2018 on Asia Conference on Computer
    and Communication Security</i> (pp. 51–65). Incheon, Republic of Korea: ACM. <a
    href="https://doi.org/10.1145/3196494.3196534">https://doi.org/10.1145/3196494.3196534</a>'
  chicago: Alwen, Joel F, Peter Gazi, Chethan Kamath Hosdurg, Karen Klein, Georg F
    Osang, Krzysztof Z Pietrzak, Lenoid Reyzin, Michal Rolinek, and Michal Rybar.
    “On the Memory Hardness of Data Independent Password Hashing Functions.” In <i>Proceedings
    of the 2018 on Asia Conference on Computer and Communication Security</i>, 51–65.
    ACM, 2018. <a href="https://doi.org/10.1145/3196494.3196534">https://doi.org/10.1145/3196494.3196534</a>.
  ieee: J. F. Alwen <i>et al.</i>, “On the memory hardness of data independent password
    hashing functions,” in <i>Proceedings of the 2018 on Asia Conference on Computer
    and Communication Security</i>, Incheon, Republic of Korea, 2018, pp. 51–65.
  ista: 'Alwen JF, Gazi P, Kamath Hosdurg C, Klein K, Osang GF, Pietrzak KZ, Reyzin
    L, Rolinek M, Rybar M. 2018. On the memory hardness of data independent password
    hashing functions. Proceedings of the 2018 on Asia Conference on Computer and
    Communication Security. ASIACCS: Asia Conference on Computer and Communications
    Security , 51–65.'
  mla: Alwen, Joel F., et al. “On the Memory Hardness of Data Independent Password
    Hashing Functions.” <i>Proceedings of the 2018 on Asia Conference on Computer
    and Communication Security</i>, ACM, 2018, pp. 51–65, doi:<a href="https://doi.org/10.1145/3196494.3196534">10.1145/3196494.3196534</a>.
  short: J.F. Alwen, P. Gazi, C. Kamath Hosdurg, K. Klein, G.F. Osang, K.Z. Pietrzak,
    L. Reyzin, M. Rolinek, M. Rybar, in:, Proceedings of the 2018 on Asia Conference
    on Computer and Communication Security, ACM, 2018, pp. 51–65.
conference:
  end_date: 2018-06-08
  location: Incheon, Republic of Korea
  name: 'ASIACCS: Asia Conference on Computer and Communications Security '
  start_date: 2018-06-04
date_created: 2018-12-11T11:45:07Z
date_published: 2018-06-01T00:00:00Z
date_updated: 2023-09-13T09:13:12Z
day: '01'
department:
- _id: KrPi
- _id: HeEd
- _id: VlKo
doi: 10.1145/3196494.3196534
ec_funded: 1
external_id:
  isi:
  - '000516620100005'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://eprint.iacr.org/2016/783
month: '06'
oa: 1
oa_version: Submitted Version
page: 51 - 65
project:
- _id: 25FBA906-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '616160'
  name: 'Discrete Optimization in Computer Vision: Theory and Practice'
- _id: 258AA5B2-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '682815'
  name: Teaching Old Crypto New Tricks
publication: Proceedings of the 2018 on Asia Conference on Computer and Communication
  Security
publication_status: published
publisher: ACM
publist_id: '7723'
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the memory hardness of data independent password hashing functions
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2018'
...
---
_id: '201'
abstract:
- lang: eng
  text: 'We describe arrangements of three-dimensional spheres from a geometrical
    and topological point of view. Real data (fitting this setup) often consist of
    soft spheres which show certain degree of deformation while strongly packing against
    each other. In this context, we answer the following questions: If we model a
    soft packing of spheres by hard spheres that are allowed to overlap, can we measure
    the volume in the overlapped areas? Can we be more specific about the overlap
    volume, i.e. quantify how much volume is there covered exactly twice, three times,
    or k times? What would be a good optimization criteria that rule the arrangement
    of soft spheres while making a good use of the available space? Fixing a particular
    criterion, what would be the optimal sphere configuration? The first result of
    this thesis are short formulas for the computation of volumes covered by at least
    k of the balls. The formulas exploit information contained in the order-k Voronoi
    diagrams and its closely related Level-k complex. The used complexes lead to a
    natural generalization into poset diagrams, a theoretical formalism that contains
    the order-k and degree-k diagrams as special cases. In parallel, we define different
    criteria to determine what could be considered an optimal arrangement from a geometrical
    point of view. Fixing a criterion, we find optimal soft packing configurations
    in 2D and 3D where the ball centers lie on a lattice. As a last step, we use tools
    from computational topology on real physical data, to show the potentials of higher-order
    diagrams in the description of melting crystals. The results of the experiments
    leaves us with an open window to apply the theories developed in this thesis in
    real applications.'
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Mabel
  full_name: Iglesias Ham, Mabel
  id: 41B58C0C-F248-11E8-B48F-1D18A9856A87
  last_name: Iglesias Ham
citation:
  ama: Iglesias Ham M. Multiple covers with balls. 2018. doi:<a href="https://doi.org/10.15479/AT:ISTA:th_1026">10.15479/AT:ISTA:th_1026</a>
  apa: Iglesias Ham, M. (2018). <i>Multiple covers with balls</i>. Institute of Science
    and Technology Austria. <a href="https://doi.org/10.15479/AT:ISTA:th_1026">https://doi.org/10.15479/AT:ISTA:th_1026</a>
  chicago: Iglesias Ham, Mabel. “Multiple Covers with Balls.” Institute of Science
    and Technology Austria, 2018. <a href="https://doi.org/10.15479/AT:ISTA:th_1026">https://doi.org/10.15479/AT:ISTA:th_1026</a>.
  ieee: M. Iglesias Ham, “Multiple covers with balls,” Institute of Science and Technology
    Austria, 2018.
  ista: Iglesias Ham M. 2018. Multiple covers with balls. Institute of Science and
    Technology Austria.
  mla: Iglesias Ham, Mabel. <i>Multiple Covers with Balls</i>. Institute of Science
    and Technology Austria, 2018, doi:<a href="https://doi.org/10.15479/AT:ISTA:th_1026">10.15479/AT:ISTA:th_1026</a>.
  short: M. Iglesias Ham, Multiple Covers with Balls, Institute of Science and Technology
    Austria, 2018.
date_created: 2018-12-11T11:45:10Z
date_published: 2018-06-11T00:00:00Z
date_updated: 2023-09-07T12:25:32Z
day: '11'
ddc:
- '514'
- '516'
degree_awarded: PhD
department:
- _id: HeEd
doi: 10.15479/AT:ISTA:th_1026
file:
- access_level: closed
  checksum: dd699303623e96d1478a6ae07210dd05
  content_type: application/zip
  creator: kschuh
  date_created: 2019-02-05T07:43:31Z
  date_updated: 2020-07-14T12:45:24Z
  file_id: '5918'
  file_name: IST-2018-1025-v2+5_ist-thesis-iglesias-11June2018(1).zip
  file_size: 11827713
  relation: source_file
- access_level: open_access
  checksum: ba163849a190d2b41d66fef0e4983294
  content_type: application/pdf
  creator: kschuh
  date_created: 2019-02-05T07:43:45Z
  date_updated: 2020-07-14T12:45:24Z
  file_id: '5919'
  file_name: IST-2018-1025-v2+4_ThesisIglesiasFinal11June2018.pdf
  file_size: 4783846
  relation: main_file
file_date_updated: 2020-07-14T12:45:24Z
has_accepted_license: '1'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: '171'
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
publist_id: '7712'
pubrep_id: '1026'
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: Multiple covers with balls
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2018'
...
---
_id: '58'
abstract:
- lang: eng
  text: 'Inside a two-dimensional region (``cake&quot;&quot;), there are m nonoverlapping
    tiles of a certain kind (``toppings&quot;&quot;). We want to expand the toppings
    while keeping them nonoverlapping, and possibly add some blank pieces of the same
    ``certain kind,&quot;&quot; such that the entire cake is covered. How many blanks
    must we add? We study this question in several cases: (1) The cake and toppings
    are general polygons. (2) The cake and toppings are convex figures. (3) The cake
    and toppings are axis-parallel rectangles. (4) The cake is an axis-parallel rectilinear
    polygon and the toppings are axis-parallel rectangles. In all four cases, we provide
    tight bounds on the number of blanks.'
article_processing_charge: No
arxiv: 1
author:
- first_name: Arseniy
  full_name: Akopyan, Arseniy
  id: 430D2C90-F248-11E8-B48F-1D18A9856A87
  last_name: Akopyan
  orcid: 0000-0002-2548-617X
- first_name: Erel
  full_name: Segal Halevi, Erel
  last_name: Segal Halevi
citation:
  ama: Akopyan A, Segal Halevi E. Counting blanks in polygonal arrangements. <i>SIAM
    Journal on Discrete Mathematics</i>. 2018;32(3):2242-2257. doi:<a href="https://doi.org/10.1137/16M110407X">10.1137/16M110407X</a>
  apa: Akopyan, A., &#38; Segal Halevi, E. (2018). Counting blanks in polygonal arrangements.
    <i>SIAM Journal on Discrete Mathematics</i>. Society for Industrial and Applied
    Mathematics . <a href="https://doi.org/10.1137/16M110407X">https://doi.org/10.1137/16M110407X</a>
  chicago: Akopyan, Arseniy, and Erel Segal Halevi. “Counting Blanks in Polygonal
    Arrangements.” <i>SIAM Journal on Discrete Mathematics</i>. Society for Industrial
    and Applied Mathematics , 2018. <a href="https://doi.org/10.1137/16M110407X">https://doi.org/10.1137/16M110407X</a>.
  ieee: A. Akopyan and E. Segal Halevi, “Counting blanks in polygonal arrangements,”
    <i>SIAM Journal on Discrete Mathematics</i>, vol. 32, no. 3. Society for Industrial
    and Applied Mathematics , pp. 2242–2257, 2018.
  ista: Akopyan A, Segal Halevi E. 2018. Counting blanks in polygonal arrangements.
    SIAM Journal on Discrete Mathematics. 32(3), 2242–2257.
  mla: Akopyan, Arseniy, and Erel Segal Halevi. “Counting Blanks in Polygonal Arrangements.”
    <i>SIAM Journal on Discrete Mathematics</i>, vol. 32, no. 3, Society for Industrial
    and Applied Mathematics , 2018, pp. 2242–57, doi:<a href="https://doi.org/10.1137/16M110407X">10.1137/16M110407X</a>.
  short: A. Akopyan, E. Segal Halevi, SIAM Journal on Discrete Mathematics 32 (2018)
    2242–2257.
date_created: 2018-12-11T11:44:24Z
date_published: 2018-09-06T00:00:00Z
date_updated: 2023-09-11T12:48:39Z
day: '06'
department:
- _id: HeEd
doi: 10.1137/16M110407X
ec_funded: 1
external_id:
  arxiv:
  - '1604.00960'
  isi:
  - '000450810500036'
intvolume: '        32'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1604.00960
month: '09'
oa: 1
oa_version: Preprint
page: 2242 - 2257
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
publication: SIAM Journal on Discrete Mathematics
publication_status: published
publisher: 'Society for Industrial and Applied Mathematics '
publist_id: '7996'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Counting blanks in polygonal arrangements
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 32
year: '2018'
...
---
_id: '6355'
abstract:
- lang: eng
  text: We  prove  that  any  cyclic  quadrilateral  can  be  inscribed  in  any  closed  convex
    C1-curve.  The smoothness condition is not required if the quadrilateral is a
    rectangle.
article_number: e7
article_processing_charge: No
arxiv: 1
author:
- first_name: Arseniy
  full_name: Akopyan, Arseniy
  id: 430D2C90-F248-11E8-B48F-1D18A9856A87
  last_name: Akopyan
  orcid: 0000-0002-2548-617X
- first_name: Sergey
  full_name: Avvakumov, Sergey
  id: 3827DAC8-F248-11E8-B48F-1D18A9856A87
  last_name: Avvakumov
citation:
  ama: Akopyan A, Avvakumov S. Any cyclic quadrilateral can be inscribed in any closed
    convex smooth curve. <i>Forum of Mathematics, Sigma</i>. 2018;6. doi:<a href="https://doi.org/10.1017/fms.2018.7">10.1017/fms.2018.7</a>
  apa: Akopyan, A., &#38; Avvakumov, S. (2018). Any cyclic quadrilateral can be inscribed
    in any closed convex smooth curve. <i>Forum of Mathematics, Sigma</i>. Cambridge
    University Press. <a href="https://doi.org/10.1017/fms.2018.7">https://doi.org/10.1017/fms.2018.7</a>
  chicago: Akopyan, Arseniy, and Sergey Avvakumov. “Any Cyclic Quadrilateral Can Be
    Inscribed in Any Closed Convex Smooth Curve.” <i>Forum of Mathematics, Sigma</i>.
    Cambridge University Press, 2018. <a href="https://doi.org/10.1017/fms.2018.7">https://doi.org/10.1017/fms.2018.7</a>.
  ieee: A. Akopyan and S. Avvakumov, “Any cyclic quadrilateral can be inscribed in
    any closed convex smooth curve,” <i>Forum of Mathematics, Sigma</i>, vol. 6. Cambridge
    University Press, 2018.
  ista: Akopyan A, Avvakumov S. 2018. Any cyclic quadrilateral can be inscribed in
    any closed convex smooth curve. Forum of Mathematics, Sigma. 6, e7.
  mla: Akopyan, Arseniy, and Sergey Avvakumov. “Any Cyclic Quadrilateral Can Be Inscribed
    in Any Closed Convex Smooth Curve.” <i>Forum of Mathematics, Sigma</i>, vol. 6,
    e7, Cambridge University Press, 2018, doi:<a href="https://doi.org/10.1017/fms.2018.7">10.1017/fms.2018.7</a>.
  short: A. Akopyan, S. Avvakumov, Forum of Mathematics, Sigma 6 (2018).
date_created: 2019-04-30T06:09:57Z
date_published: 2018-05-31T00:00:00Z
date_updated: 2023-09-19T14:50:12Z
day: '31'
ddc:
- '510'
department:
- _id: UlWa
- _id: HeEd
- _id: JaMa
doi: 10.1017/fms.2018.7
ec_funded: 1
external_id:
  arxiv:
  - '1712.10205'
  isi:
  - '000433915500001'
file:
- access_level: open_access
  checksum: 5a71b24ba712a3eb2e46165a38fbc30a
  content_type: application/pdf
  creator: dernst
  date_created: 2019-04-30T06:14:58Z
  date_updated: 2020-07-14T12:47:28Z
  file_id: '6356'
  file_name: 2018_ForumMahtematics_Akopyan.pdf
  file_size: 249246
  relation: main_file
file_date_updated: 2020-07-14T12:47:28Z
has_accepted_license: '1'
intvolume: '         6'
isi: 1
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
project:
- _id: 256E75B8-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '716117'
  name: Optimal Transport and Stochastic Dynamics
publication: Forum of Mathematics, Sigma
publication_identifier:
  issn:
  - 2050-5094
publication_status: published
publisher: Cambridge University Press
quality_controlled: '1'
related_material:
  record:
  - id: '8156'
    relation: dissertation_contains
    status: public
status: public
title: Any cyclic quadrilateral can be inscribed in any closed convex smooth curve
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 6
year: '2018'
...
---
_id: '106'
abstract:
- lang: eng
  text: The goal of this article is to introduce the reader to the theory of intrinsic
    geometry of convex surfaces. We illustrate the power of the tools by proving a
    theorem on convex surfaces containing an arbitrarily long closed simple geodesic.
    Let us remind ourselves that a curve in a surface is called geodesic if every
    sufficiently short arc of the curve is length minimizing; if, in addition, it
    has no self-intersections, we call it simple geodesic. A tetrahedron with equal
    opposite edges is called isosceles. The axiomatic method of Alexandrov geometry
    allows us to work with the metrics of convex surfaces directly, without approximating
    it first by a smooth or polyhedral metric. Such approximations destroy the closed
    geodesics on the surface; therefore it is difficult (if at all possible) to apply
    approximations in the proof of our theorem. On the other hand, a proof in the
    smooth or polyhedral case usually admits a translation into Alexandrov’s language;
    such translation makes the result more general. In fact, our proof resembles a
    translation of the proof given by Protasov. Note that the main theorem implies
    in particular that a smooth convex surface does not have arbitrarily long simple
    closed geodesics. However we do not know a proof of this corollary that is essentially
    simpler than the one presented below.
article_processing_charge: No
arxiv: 1
author:
- first_name: Arseniy
  full_name: Akopyan, Arseniy
  id: 430D2C90-F248-11E8-B48F-1D18A9856A87
  last_name: Akopyan
  orcid: 0000-0002-2548-617X
- first_name: Anton
  full_name: Petrunin, Anton
  last_name: Petrunin
citation:
  ama: Akopyan A, Petrunin A. Long geodesics on convex surfaces. <i>Mathematical Intelligencer</i>.
    2018;40(3):26-31. doi:<a href="https://doi.org/10.1007/s00283-018-9795-5">10.1007/s00283-018-9795-5</a>
  apa: Akopyan, A., &#38; Petrunin, A. (2018). Long geodesics on convex surfaces.
    <i>Mathematical Intelligencer</i>. Springer. <a href="https://doi.org/10.1007/s00283-018-9795-5">https://doi.org/10.1007/s00283-018-9795-5</a>
  chicago: Akopyan, Arseniy, and Anton Petrunin. “Long Geodesics on Convex Surfaces.”
    <i>Mathematical Intelligencer</i>. Springer, 2018. <a href="https://doi.org/10.1007/s00283-018-9795-5">https://doi.org/10.1007/s00283-018-9795-5</a>.
  ieee: A. Akopyan and A. Petrunin, “Long geodesics on convex surfaces,” <i>Mathematical
    Intelligencer</i>, vol. 40, no. 3. Springer, pp. 26–31, 2018.
  ista: Akopyan A, Petrunin A. 2018. Long geodesics on convex surfaces. Mathematical
    Intelligencer. 40(3), 26–31.
  mla: Akopyan, Arseniy, and Anton Petrunin. “Long Geodesics on Convex Surfaces.”
    <i>Mathematical Intelligencer</i>, vol. 40, no. 3, Springer, 2018, pp. 26–31,
    doi:<a href="https://doi.org/10.1007/s00283-018-9795-5">10.1007/s00283-018-9795-5</a>.
  short: A. Akopyan, A. Petrunin, Mathematical Intelligencer 40 (2018) 26–31.
date_created: 2018-12-11T11:44:40Z
date_published: 2018-09-01T00:00:00Z
date_updated: 2023-09-13T08:49:16Z
day: '01'
department:
- _id: HeEd
doi: 10.1007/s00283-018-9795-5
external_id:
  arxiv:
  - '1702.05172'
  isi:
  - '000444141200005'
intvolume: '        40'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1702.05172
month: '09'
oa: 1
oa_version: Preprint
page: 26 - 31
publication: Mathematical Intelligencer
publication_status: published
publisher: Springer
publist_id: '7948'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Long geodesics on convex surfaces
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 40
year: '2018'
...
---
_id: '1064'
abstract:
- lang: eng
  text: 'In 1945, A.W. Goodman and R.E. Goodman proved the following conjecture by
    P. Erdős: Given a family of (round) disks of radii r1, … , rn in the plane, it
    is always possible to cover them by a disk of radius R= ∑ ri, provided they cannot
    be separated into two subfamilies by a straight line disjoint from the disks.
    In this note we show that essentially the same idea may work for different analogues
    and generalizations of their result. In particular, we prove the following: Given
    a family of positive homothetic copies of a fixed convex body K⊂ Rd with homothety
    coefficients τ1, … , τn> 0 , it is always possible to cover them by a translate
    of d+12(∑τi)K, provided they cannot be separated into two subfamilies by a hyperplane
    disjoint from the homothets.'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Arseniy
  full_name: Akopyan, Arseniy
  id: 430D2C90-F248-11E8-B48F-1D18A9856A87
  last_name: Akopyan
  orcid: 0000-0002-2548-617X
- first_name: Alexey
  full_name: Balitskiy, Alexey
  last_name: Balitskiy
- first_name: Mikhail
  full_name: Grigorev, Mikhail
  last_name: Grigorev
citation:
  ama: Akopyan A, Balitskiy A, Grigorev M. On the circle covering theorem by A.W.
    Goodman and R.E. Goodman. <i>Discrete &#38; Computational Geometry</i>. 2018;59(4):1001-1009.
    doi:<a href="https://doi.org/10.1007/s00454-017-9883-x">10.1007/s00454-017-9883-x</a>
  apa: Akopyan, A., Balitskiy, A., &#38; Grigorev, M. (2018). On the circle covering
    theorem by A.W. Goodman and R.E. Goodman. <i>Discrete &#38; Computational Geometry</i>.
    Springer. <a href="https://doi.org/10.1007/s00454-017-9883-x">https://doi.org/10.1007/s00454-017-9883-x</a>
  chicago: Akopyan, Arseniy, Alexey Balitskiy, and Mikhail Grigorev. “On the Circle
    Covering Theorem by A.W. Goodman and R.E. Goodman.” <i>Discrete &#38; Computational
    Geometry</i>. Springer, 2018. <a href="https://doi.org/10.1007/s00454-017-9883-x">https://doi.org/10.1007/s00454-017-9883-x</a>.
  ieee: A. Akopyan, A. Balitskiy, and M. Grigorev, “On the circle covering theorem
    by A.W. Goodman and R.E. Goodman,” <i>Discrete &#38; Computational Geometry</i>,
    vol. 59, no. 4. Springer, pp. 1001–1009, 2018.
  ista: Akopyan A, Balitskiy A, Grigorev M. 2018. On the circle covering theorem by
    A.W. Goodman and R.E. Goodman. Discrete &#38; Computational Geometry. 59(4), 1001–1009.
  mla: Akopyan, Arseniy, et al. “On the Circle Covering Theorem by A.W. Goodman and
    R.E. Goodman.” <i>Discrete &#38; Computational Geometry</i>, vol. 59, no. 4, Springer,
    2018, pp. 1001–09, doi:<a href="https://doi.org/10.1007/s00454-017-9883-x">10.1007/s00454-017-9883-x</a>.
  short: A. Akopyan, A. Balitskiy, M. Grigorev, Discrete &#38; Computational Geometry
    59 (2018) 1001–1009.
date_created: 2018-12-11T11:49:57Z
date_published: 2018-06-01T00:00:00Z
date_updated: 2023-09-20T12:08:51Z
day: '01'
ddc:
- '516'
- '000'
department:
- _id: HeEd
doi: 10.1007/s00454-017-9883-x
ec_funded: 1
external_id:
  isi:
  - '000432205500011'
file:
- access_level: open_access
  content_type: application/pdf
  creator: dernst
  date_created: 2019-01-18T09:27:36Z
  date_updated: 2019-01-18T09:27:36Z
  file_id: '5844'
  file_name: 2018_DiscreteComp_Akopyan.pdf
  file_size: 482518
  relation: main_file
  success: 1
file_date_updated: 2019-01-18T09:27:36Z
has_accepted_license: '1'
intvolume: '        59'
isi: 1
issue: '4'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 1001-1009
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
publication: Discrete & Computational Geometry
publication_identifier:
  eissn:
  - '14320444'
  issn:
  - '01795376'
publication_status: published
publisher: Springer
publist_id: '6324'
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the circle covering theorem by A.W. Goodman and R.E. Goodman
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 59
year: '2018'
...
---
_id: '312'
abstract:
- lang: eng
  text: Motivated by biological questions, we study configurations of equal spheres
    that neither pack nor cover. Placing their centers on a lattice, we define the
    soft density of the configuration by penalizing multiple overlaps. Considering
    the 1-parameter family of diagonally distorted 3-dimensional integer lattices,
    we show that the soft density is maximized at the FCC lattice.
acknowledgement: This work was partially supported by the DFG Collaborative Research
  Center TRR 109, “Discretization in Geometry and Dynamics,” through grant I02979-N35
  of the Austrian Science Fund (FWF).
article_processing_charge: No
article_type: original
author:
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Mabel
  full_name: Iglesias Ham, Mabel
  id: 41B58C0C-F248-11E8-B48F-1D18A9856A87
  last_name: Iglesias Ham
citation:
  ama: Edelsbrunner H, Iglesias Ham M. On the optimality of the FCC lattice for soft
    sphere packing. <i>SIAM J Discrete Math</i>. 2018;32(1):750-782. doi:<a href="https://doi.org/10.1137/16M1097201">10.1137/16M1097201</a>
  apa: Edelsbrunner, H., &#38; Iglesias Ham, M. (2018). On the optimality of the FCC
    lattice for soft sphere packing. <i>SIAM J Discrete Math</i>. Society for Industrial
    and Applied Mathematics . <a href="https://doi.org/10.1137/16M1097201">https://doi.org/10.1137/16M1097201</a>
  chicago: Edelsbrunner, Herbert, and Mabel Iglesias Ham. “On the Optimality of the
    FCC Lattice for Soft Sphere Packing.” <i>SIAM J Discrete Math</i>. Society for
    Industrial and Applied Mathematics , 2018. <a href="https://doi.org/10.1137/16M1097201">https://doi.org/10.1137/16M1097201</a>.
  ieee: H. Edelsbrunner and M. Iglesias Ham, “On the optimality of the FCC lattice
    for soft sphere packing,” <i>SIAM J Discrete Math</i>, vol. 32, no. 1. Society
    for Industrial and Applied Mathematics , pp. 750–782, 2018.
  ista: Edelsbrunner H, Iglesias Ham M. 2018. On the optimality of the FCC lattice
    for soft sphere packing. SIAM J Discrete Math. 32(1), 750–782.
  mla: Edelsbrunner, Herbert, and Mabel Iglesias Ham. “On the Optimality of the FCC
    Lattice for Soft Sphere Packing.” <i>SIAM J Discrete Math</i>, vol. 32, no. 1,
    Society for Industrial and Applied Mathematics , 2018, pp. 750–82, doi:<a href="https://doi.org/10.1137/16M1097201">10.1137/16M1097201</a>.
  short: H. Edelsbrunner, M. Iglesias Ham, SIAM J Discrete Math 32 (2018) 750–782.
date_created: 2018-12-11T11:45:46Z
date_published: 2018-03-29T00:00:00Z
date_updated: 2023-09-13T09:34:38Z
day: '29'
department:
- _id: HeEd
doi: 10.1137/16M1097201
external_id:
  isi:
  - '000428958900038'
intvolume: '        32'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://pdfs.semanticscholar.org/d2d5/6da00fbc674e6a8b1bb9d857167e54200dc6.pdf
month: '03'
oa: 1
oa_version: Submitted Version
page: 750 - 782
project:
- _id: 2561EBF4-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I02979-N35
  name: Persistence and stability of geometric complexes
publication: SIAM J Discrete Math
publication_identifier:
  issn:
  - '08954801'
publication_status: published
publisher: 'Society for Industrial and Applied Mathematics '
publist_id: '7553'
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the optimality of the FCC lattice for soft sphere packing
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 32
year: '2018'
...
---
_id: '409'
abstract:
- lang: eng
  text: We give a simple proof of T. Stehling's result [4], whereby in any normal
    tiling of the plane with convex polygons with number of sides not less than six,
    all tiles except a finite number are hexagons.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Arseniy
  full_name: Akopyan, Arseniy
  id: 430D2C90-F248-11E8-B48F-1D18A9856A87
  last_name: Akopyan
  orcid: 0000-0002-2548-617X
citation:
  ama: Akopyan A. On the number of non-hexagons in a planar tiling. <i>Comptes Rendus
    Mathematique</i>. 2018;356(4):412-414. doi:<a href="https://doi.org/10.1016/j.crma.2018.03.005">10.1016/j.crma.2018.03.005</a>
  apa: Akopyan, A. (2018). On the number of non-hexagons in a planar tiling. <i>Comptes
    Rendus Mathematique</i>. Elsevier. <a href="https://doi.org/10.1016/j.crma.2018.03.005">https://doi.org/10.1016/j.crma.2018.03.005</a>
  chicago: Akopyan, Arseniy. “On the Number of Non-Hexagons in a Planar Tiling.” <i>Comptes
    Rendus Mathematique</i>. Elsevier, 2018. <a href="https://doi.org/10.1016/j.crma.2018.03.005">https://doi.org/10.1016/j.crma.2018.03.005</a>.
  ieee: A. Akopyan, “On the number of non-hexagons in a planar tiling,” <i>Comptes
    Rendus Mathematique</i>, vol. 356, no. 4. Elsevier, pp. 412–414, 2018.
  ista: Akopyan A. 2018. On the number of non-hexagons in a planar tiling. Comptes
    Rendus Mathematique. 356(4), 412–414.
  mla: Akopyan, Arseniy. “On the Number of Non-Hexagons in a Planar Tiling.” <i>Comptes
    Rendus Mathematique</i>, vol. 356, no. 4, Elsevier, 2018, pp. 412–14, doi:<a href="https://doi.org/10.1016/j.crma.2018.03.005">10.1016/j.crma.2018.03.005</a>.
  short: A. Akopyan, Comptes Rendus Mathematique 356 (2018) 412–414.
date_created: 2018-12-11T11:46:19Z
date_published: 2018-04-01T00:00:00Z
date_updated: 2023-09-13T09:34:12Z
day: '01'
department:
- _id: HeEd
doi: 10.1016/j.crma.2018.03.005
external_id:
  arxiv:
  - '1805.01652'
  isi:
  - '000430402700009'
intvolume: '       356'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1805.01652
month: '04'
oa: 1
oa_version: Preprint
page: 412-414
publication: Comptes Rendus Mathematique
publication_identifier:
  issn:
  - 1631073X
publication_status: published
publisher: Elsevier
publist_id: '7420'
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the number of non-hexagons in a planar tiling
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 356
year: '2018'
...
---
_id: '458'
abstract:
- lang: eng
  text: We consider congruences of straight lines in a plane with the combinatorics
    of the square grid, with all elementary quadrilaterals possessing an incircle.
    It is shown that all the vertices of such nets (we call them incircular or IC-nets)
    lie on confocal conics. Our main new results are on checkerboard IC-nets in the
    plane. These are congruences of straight lines in the plane with the combinatorics
    of the square grid, combinatorially colored as a checkerboard, such that all black
    coordinate quadrilaterals possess inscribed circles. We show how this larger class
    of IC-nets appears quite naturally in Laguerre geometry of oriented planes and
    spheres and leads to new remarkable incidence theorems. Most of our results are
    valid in hyperbolic and spherical geometries as well. We present also generalizations
    in spaces of higher dimension, called checkerboard IS-nets. The construction of
    these nets is based on a new 9 inspheres incidence theorem.
acknowledgement: DFG Collaborative Research Center TRR 109 “Discretization in Geometry
  and Dynamics”; People Programme (Marie Curie Actions) of the European Union’s Seventh
  Framework Programme (FP7/2007-2013) REA grant agreement n◦[291734]
article_processing_charge: No
author:
- first_name: Arseniy
  full_name: Akopyan, Arseniy
  id: 430D2C90-F248-11E8-B48F-1D18A9856A87
  last_name: Akopyan
  orcid: 0000-0002-2548-617X
- first_name: Alexander
  full_name: Bobenko, Alexander
  last_name: Bobenko
citation:
  ama: Akopyan A, Bobenko A. Incircular nets and confocal conics. <i>Transactions
    of the American Mathematical Society</i>. 2018;370(4):2825-2854. doi:<a href="https://doi.org/10.1090/tran/7292">10.1090/tran/7292</a>
  apa: Akopyan, A., &#38; Bobenko, A. (2018). Incircular nets and confocal conics.
    <i>Transactions of the American Mathematical Society</i>. American Mathematical
    Society. <a href="https://doi.org/10.1090/tran/7292">https://doi.org/10.1090/tran/7292</a>
  chicago: Akopyan, Arseniy, and Alexander Bobenko. “Incircular Nets and Confocal
    Conics.” <i>Transactions of the American Mathematical Society</i>. American Mathematical
    Society, 2018. <a href="https://doi.org/10.1090/tran/7292">https://doi.org/10.1090/tran/7292</a>.
  ieee: A. Akopyan and A. Bobenko, “Incircular nets and confocal conics,” <i>Transactions
    of the American Mathematical Society</i>, vol. 370, no. 4. American Mathematical
    Society, pp. 2825–2854, 2018.
  ista: Akopyan A, Bobenko A. 2018. Incircular nets and confocal conics. Transactions
    of the American Mathematical Society. 370(4), 2825–2854.
  mla: Akopyan, Arseniy, and Alexander Bobenko. “Incircular Nets and Confocal Conics.”
    <i>Transactions of the American Mathematical Society</i>, vol. 370, no. 4, American
    Mathematical Society, 2018, pp. 2825–54, doi:<a href="https://doi.org/10.1090/tran/7292">10.1090/tran/7292</a>.
  short: A. Akopyan, A. Bobenko, Transactions of the American Mathematical Society
    370 (2018) 2825–2854.
date_created: 2018-12-11T11:46:35Z
date_published: 2018-04-01T00:00:00Z
date_updated: 2023-09-11T14:19:12Z
day: '01'
department:
- _id: HeEd
doi: 10.1090/tran/7292
ec_funded: 1
external_id:
  isi:
  - '000423197800019'
intvolume: '       370'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1602.04637
month: '04'
oa: 1
oa_version: Preprint
page: 2825 - 2854
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
publication: Transactions of the American Mathematical Society
publication_status: published
publisher: American Mathematical Society
publist_id: '7363'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Incircular nets and confocal conics
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 370
year: '2018'
...
---
_id: '530'
abstract:
- lang: eng
  text: Inclusion–exclusion is an effective method for computing the volume of a union
    of measurable sets. We extend it to multiple coverings, proving short inclusion–exclusion
    formulas for the subset of Rn covered by at least k balls in a finite set. We
    implement two of the formulas in dimension n=3 and report on results obtained
    with our software.
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: Mabel
  full_name: Iglesias Ham, Mabel
  id: 41B58C0C-F248-11E8-B48F-1D18A9856A87
  last_name: Iglesias Ham
citation:
  ama: 'Edelsbrunner H, Iglesias Ham M. Multiple covers with balls I: Inclusion–exclusion.
    <i>Computational Geometry: Theory and Applications</i>. 2018;68:119-133. doi:<a
    href="https://doi.org/10.1016/j.comgeo.2017.06.014">10.1016/j.comgeo.2017.06.014</a>'
  apa: 'Edelsbrunner, H., &#38; Iglesias Ham, M. (2018). Multiple covers with balls
    I: Inclusion–exclusion. <i>Computational Geometry: Theory and Applications</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.comgeo.2017.06.014">https://doi.org/10.1016/j.comgeo.2017.06.014</a>'
  chicago: 'Edelsbrunner, Herbert, and Mabel Iglesias Ham. “Multiple Covers with Balls
    I: Inclusion–Exclusion.” <i>Computational Geometry: Theory and Applications</i>.
    Elsevier, 2018. <a href="https://doi.org/10.1016/j.comgeo.2017.06.014">https://doi.org/10.1016/j.comgeo.2017.06.014</a>.'
  ieee: 'H. Edelsbrunner and M. Iglesias Ham, “Multiple covers with balls I: Inclusion–exclusion,”
    <i>Computational Geometry: Theory and Applications</i>, vol. 68. Elsevier, pp.
    119–133, 2018.'
  ista: 'Edelsbrunner H, Iglesias Ham M. 2018. Multiple covers with balls I: Inclusion–exclusion.
    Computational Geometry: Theory and Applications. 68, 119–133.'
  mla: 'Edelsbrunner, Herbert, and Mabel Iglesias Ham. “Multiple Covers with Balls
    I: Inclusion–Exclusion.” <i>Computational Geometry: Theory and Applications</i>,
    vol. 68, Elsevier, 2018, pp. 119–33, doi:<a href="https://doi.org/10.1016/j.comgeo.2017.06.014">10.1016/j.comgeo.2017.06.014</a>.'
  short: 'H. Edelsbrunner, M. Iglesias Ham, Computational Geometry: Theory and Applications
    68 (2018) 119–133.'
date_created: 2018-12-11T11:46:59Z
date_published: 2018-03-01T00:00:00Z
date_updated: 2023-09-13T08:59:00Z
day: '01'
ddc:
- '000'
department:
- _id: HeEd
doi: 10.1016/j.comgeo.2017.06.014
ec_funded: 1
external_id:
  isi:
  - '000415778300010'
file:
- access_level: open_access
  checksum: 1c8d58cd489a66cd3e2064c1141c8c5e
  content_type: application/pdf
  creator: dernst
  date_created: 2019-02-12T06:47:52Z
  date_updated: 2020-07-14T12:46:38Z
  file_id: '5953'
  file_name: 2018_Edelsbrunner.pdf
  file_size: 708357
  relation: main_file
file_date_updated: 2020-07-14T12:46:38Z
has_accepted_license: '1'
intvolume: '        68'
isi: 1
language:
- iso: eng
month: '03'
oa: 1
oa_version: Preprint
page: 119 - 133
project:
- _id: 255D761E-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '318493'
  name: Topological Complex Systems
publication: 'Computational Geometry: Theory and Applications'
publication_status: published
publisher: Elsevier
publist_id: '7289'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Multiple covers with balls I: Inclusion–exclusion'
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 68
year: '2018'
...
---
_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
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
date_created: 2018-12-11T11:48:45Z
date_published: 2017-07-28T00:00:00Z
date_updated: 2023-09-26T16:10:03Z
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:
  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:
  - '03029743'
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 10424
year: '2017'
...
---
_id: '836'
abstract:
- lang: eng
  text: Recent research has examined how to study the topological features of a continuous
    self-map by means of the persistence of the eigenspaces, for given eigenvalues,
    of the endomorphism induced in homology over a field. This raised the question
    of how to select dynamically significant eigenvalues. The present paper aims to
    answer this question, giving an algorithm that computes the persistence of eigenspaces
    for every eigenvalue simultaneously, also expressing said eigenspaces as direct
    sums of “finite” and “singular” subspaces.
alternative_title:
- PROMS
article_processing_charge: No
author:
- first_name: Marc
  full_name: Ethier, Marc
  last_name: Ethier
- first_name: Grzegorz
  full_name: Jablonski, Grzegorz
  id: 4483EF78-F248-11E8-B48F-1D18A9856A87
  last_name: Jablonski
  orcid: 0000-0002-3536-9866
- first_name: Marian
  full_name: Mrozek, Marian
  last_name: Mrozek
citation:
  ama: 'Ethier M, Jablonski G, Mrozek M. Finding eigenvalues of self-maps with the
    Kronecker canonical form. In: <i>Special Sessions in Applications of Computer
    Algebra</i>. Vol 198. Springer; 2017:119-136. doi:<a href="https://doi.org/10.1007/978-3-319-56932-1_8">10.1007/978-3-319-56932-1_8</a>'
  apa: 'Ethier, M., Jablonski, G., &#38; Mrozek, M. (2017). Finding eigenvalues of
    self-maps with the Kronecker canonical form. In <i>Special Sessions in Applications
    of Computer Algebra</i> (Vol. 198, pp. 119–136). Kalamata, Greece: Springer. <a
    href="https://doi.org/10.1007/978-3-319-56932-1_8">https://doi.org/10.1007/978-3-319-56932-1_8</a>'
  chicago: Ethier, Marc, Grzegorz Jablonski, and Marian Mrozek. “Finding Eigenvalues
    of Self-Maps with the Kronecker Canonical Form.” In <i>Special Sessions in Applications
    of Computer Algebra</i>, 198:119–36. Springer, 2017. <a href="https://doi.org/10.1007/978-3-319-56932-1_8">https://doi.org/10.1007/978-3-319-56932-1_8</a>.
  ieee: M. Ethier, G. Jablonski, and M. Mrozek, “Finding eigenvalues of self-maps
    with the Kronecker canonical form,” in <i>Special Sessions in Applications of
    Computer Algebra</i>, Kalamata, Greece, 2017, vol. 198, pp. 119–136.
  ista: 'Ethier M, Jablonski G, Mrozek M. 2017. Finding eigenvalues of self-maps with
    the Kronecker canonical form. Special Sessions in Applications of Computer Algebra.
    ACA: Applications of Computer Algebra, PROMS, vol. 198, 119–136.'
  mla: Ethier, Marc, et al. “Finding Eigenvalues of Self-Maps with the Kronecker Canonical
    Form.” <i>Special Sessions in Applications of Computer Algebra</i>, vol. 198,
    Springer, 2017, pp. 119–36, doi:<a href="https://doi.org/10.1007/978-3-319-56932-1_8">10.1007/978-3-319-56932-1_8</a>.
  short: M. Ethier, G. Jablonski, M. Mrozek, in:, Special Sessions in Applications
    of Computer Algebra, Springer, 2017, pp. 119–136.
conference:
  end_date: 2015-07-23
  location: Kalamata, Greece
  name: 'ACA: Applications of Computer Algebra'
  start_date: 2015-07-20
date_created: 2018-12-11T11:48:46Z
date_published: 2017-07-27T00:00:00Z
date_updated: 2023-09-26T15:50:52Z
day: '27'
department:
- _id: HeEd
doi: 10.1007/978-3-319-56932-1_8
ec_funded: 1
external_id:
  isi:
  - '000434088200008'
intvolume: '       198'
isi: 1
language:
- iso: eng
month: '07'
oa_version: None
page: 119 - 136
project:
- _id: 255D761E-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '318493'
  name: Topological Complex Systems
publication: Special Sessions in Applications of Computer Algebra
publication_identifier:
  isbn:
  - 978-331956930-7
publication_status: published
publisher: Springer
publist_id: '6812'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Finding eigenvalues of self-maps with the Kronecker canonical form
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 198
year: '2017'
...
---
_id: '84'
abstract:
- lang: eng
  text: The advent of high-throughput technologies and the concurrent advances in
    information sciences have led to a data revolution in biology. This revolution
    is most significant in molecular biology, with an increase in the number and scale
    of the “omics” projects over the last decade. Genomics projects, for example,
    have produced impressive advances in our knowledge of the information concealed
    into genomes, from the many genes that encode for the proteins that are responsible
    for most if not all cellular functions, to the noncoding regions that are now
    known to provide regulatory functions. Proteomics initiatives help to decipher
    the role of post-translation modifications on the protein structures and provide
    maps of protein-protein interactions, while functional genomics is the field that
    attempts to make use of the data produced by these projects to understand protein
    functions. The biggest challenge today is to assimilate the wealth of information
    provided by these initiatives into a conceptual framework that will help us decipher
    life. For example, the current views of the relationship between protein structure
    and function remain fragmented. We know of their sequences, more and more about
    their structures, we have information on their biological activities, but we have
    difficulties connecting this dotted line into an informed whole. We lack the experimental
    and computational tools for directly studying protein structure, function, and
    dynamics at the molecular and supra-molecular levels. In this chapter, we review
    some of the current developments in building the computational tools that are
    needed, focusing on the role that geometry and topology play in these efforts.
    One of our goals is to raise the general awareness about the importance of geometric
    methods in elucidating the mysterious foundations of our very existence. Another
    goal is the broadening of what we consider a geometric algorithm. There is plenty
    of valuable no-man’s-land between combinatorial and numerical algorithms, and
    it seems opportune to explore this land with a computational-geometric frame of
    mind.
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: Patrice
  full_name: Koehl, Patrice
  last_name: Koehl
citation:
  ama: 'Edelsbrunner H, Koehl P. Computational topology for structural molecular biology.
    In: Toth C, O’Rourke J, Goodman J, eds. <i>Handbook of Discrete and Computational
    Geometry, Third Edition</i>. Handbook of Discrete and Computational Geometry.
    Taylor &#38; Francis; 2017:1709-1735. doi:<a href="https://doi.org/10.1201/9781315119601">10.1201/9781315119601</a>'
  apa: Edelsbrunner, H., &#38; Koehl, P. (2017). Computational topology for structural
    molecular biology. In C. Toth, J. O’Rourke, &#38; J. Goodman (Eds.), <i>Handbook
    of Discrete and Computational Geometry, Third Edition</i> (pp. 1709–1735). Taylor
    &#38; Francis. <a href="https://doi.org/10.1201/9781315119601">https://doi.org/10.1201/9781315119601</a>
  chicago: Edelsbrunner, Herbert, and Patrice Koehl. “Computational Topology for Structural
    Molecular Biology.” In <i>Handbook of Discrete and Computational Geometry, Third
    Edition</i>, edited by Csaba Toth, Joseph O’Rourke, and Jacob Goodman, 1709–35.
    Handbook of Discrete and Computational Geometry. Taylor &#38; Francis, 2017. <a
    href="https://doi.org/10.1201/9781315119601">https://doi.org/10.1201/9781315119601</a>.
  ieee: H. Edelsbrunner and P. Koehl, “Computational topology for structural molecular
    biology,” in <i>Handbook of Discrete and Computational Geometry, Third Edition</i>,
    C. Toth, J. O’Rourke, and J. Goodman, Eds. Taylor &#38; Francis, 2017, pp. 1709–1735.
  ista: 'Edelsbrunner H, Koehl P. 2017.Computational topology for structural molecular
    biology. In: Handbook of Discrete and Computational Geometry, Third Edition. ,
    1709–1735.'
  mla: Edelsbrunner, Herbert, and Patrice Koehl. “Computational Topology for Structural
    Molecular Biology.” <i>Handbook of Discrete and Computational Geometry, Third
    Edition</i>, edited by Csaba Toth et al., Taylor &#38; Francis, 2017, pp. 1709–35,
    doi:<a href="https://doi.org/10.1201/9781315119601">10.1201/9781315119601</a>.
  short: H. Edelsbrunner, P. Koehl, in:, C. Toth, J. O’Rourke, J. Goodman (Eds.),
    Handbook of Discrete and Computational Geometry, Third Edition, Taylor &#38; Francis,
    2017, pp. 1709–1735.
date_created: 2018-12-11T11:44:32Z
date_published: 2017-11-09T00:00:00Z
date_updated: 2023-10-16T11:15:22Z
day: '09'
department:
- _id: HeEd
doi: 10.1201/9781315119601
editor:
- first_name: Csaba
  full_name: Toth, Csaba
  last_name: Toth
- first_name: Joseph
  full_name: O'Rourke, Joseph
  last_name: O'Rourke
- first_name: Jacob
  full_name: Goodman, Jacob
  last_name: Goodman
language:
- iso: eng
month: '11'
oa_version: None
page: 1709 - 1735
publication: Handbook of Discrete and Computational Geometry, Third Edition
publication_identifier:
  eisbn:
  - '9781498711425'
publication_status: published
publisher: Taylor & Francis
publist_id: '7970'
quality_controlled: '1'
scopus_import: '1'
series_title: Handbook of Discrete and Computational Geometry
status: public
title: Computational topology for structural molecular biology
type: book_chapter
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2017'
...
---
_id: '909'
abstract:
- lang: eng
  text: We study the lengths of curves passing through a fixed number of points on
    the boundary of a convex shape in the plane. We show that, for any convex shape
    K, there exist four points on the boundary of K such that the length of any curve
    passing through these points is at least half of the perimeter of K. It is also
    shown that the same statement does not remain valid with the additional constraint
    that the points are extreme points of K. Moreover, the factor &amp;#xbd; cannot
    be achieved with any fixed number of extreme points. We conclude the paper with
    a few other inequalities related to the perimeter of a convex shape.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Arseniy
  full_name: Akopyan, Arseniy
  id: 430D2C90-F248-11E8-B48F-1D18A9856A87
  last_name: Akopyan
  orcid: 0000-0002-2548-617X
- first_name: Vladislav
  full_name: Vysotsky, Vladislav
  last_name: Vysotsky
citation:
  ama: Akopyan A, Vysotsky V. On the lengths of curves passing through boundary points
    of a planar convex shape. <i>The American Mathematical Monthly</i>. 2017;124(7):588-596.
    doi:<a href="https://doi.org/10.4169/amer.math.monthly.124.7.588">10.4169/amer.math.monthly.124.7.588</a>
  apa: Akopyan, A., &#38; Vysotsky, V. (2017). On the lengths of curves passing through
    boundary points of a planar convex shape. <i>The American Mathematical Monthly</i>.
    Mathematical Association of America. <a href="https://doi.org/10.4169/amer.math.monthly.124.7.588">https://doi.org/10.4169/amer.math.monthly.124.7.588</a>
  chicago: Akopyan, Arseniy, and Vladislav Vysotsky. “On the Lengths of Curves Passing
    through Boundary Points of a Planar Convex Shape.” <i>The American Mathematical
    Monthly</i>. Mathematical Association of America, 2017. <a href="https://doi.org/10.4169/amer.math.monthly.124.7.588">https://doi.org/10.4169/amer.math.monthly.124.7.588</a>.
  ieee: A. Akopyan and V. Vysotsky, “On the lengths of curves passing through boundary
    points of a planar convex shape,” <i>The American Mathematical Monthly</i>, vol.
    124, no. 7. Mathematical Association of America, pp. 588–596, 2017.
  ista: Akopyan A, Vysotsky V. 2017. On the lengths of curves passing through boundary
    points of a planar convex shape. The American Mathematical Monthly. 124(7), 588–596.
  mla: Akopyan, Arseniy, and Vladislav Vysotsky. “On the Lengths of Curves Passing
    through Boundary Points of a Planar Convex Shape.” <i>The American Mathematical
    Monthly</i>, vol. 124, no. 7, Mathematical Association of America, 2017, pp. 588–96,
    doi:<a href="https://doi.org/10.4169/amer.math.monthly.124.7.588">10.4169/amer.math.monthly.124.7.588</a>.
  short: A. Akopyan, V. Vysotsky, The American Mathematical Monthly 124 (2017) 588–596.
date_created: 2018-12-11T11:49:09Z
date_published: 2017-01-01T00:00:00Z
date_updated: 2023-10-17T11:24:57Z
day: '01'
department:
- _id: HeEd
doi: 10.4169/amer.math.monthly.124.7.588
ec_funded: 1
external_id:
  arxiv:
  - '1605.07997'
  isi:
  - '000413947300002'
intvolume: '       124'
isi: 1
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1605.07997
month: '01'
oa: 1
oa_version: Submitted Version
page: 588 - 596
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
publication: The American Mathematical Monthly
publication_identifier:
  issn:
  - '00029890'
publication_status: published
publisher: Mathematical Association of America
publist_id: '6534'
quality_controlled: '1'
scopus_import: '1'
status: public
title: On the lengths of curves passing through boundary points of a planar convex
  shape
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 124
year: '2017'
...
---
_id: '707'
abstract:
- lang: eng
  text: We answer a question of M. Gromov on the waist of the unit ball.
author:
- first_name: Arseniy
  full_name: Akopyan, Arseniy
  id: 430D2C90-F248-11E8-B48F-1D18A9856A87
  last_name: Akopyan
  orcid: 0000-0002-2548-617X
- first_name: Roman
  full_name: Karasev, Roman
  last_name: Karasev
citation:
  ama: Akopyan A, Karasev R. A tight estimate for the waist of the ball . <i>Bulletin
    of the London Mathematical Society</i>. 2017;49(4):690-693. doi:<a href="https://doi.org/10.1112/blms.12062">10.1112/blms.12062</a>
  apa: Akopyan, A., &#38; Karasev, R. (2017). A tight estimate for the waist of the
    ball . <i>Bulletin of the London Mathematical Society</i>. Wiley-Blackwell. <a
    href="https://doi.org/10.1112/blms.12062">https://doi.org/10.1112/blms.12062</a>
  chicago: Akopyan, Arseniy, and Roman Karasev. “A Tight Estimate for the Waist of
    the Ball .” <i>Bulletin of the London Mathematical Society</i>. Wiley-Blackwell,
    2017. <a href="https://doi.org/10.1112/blms.12062">https://doi.org/10.1112/blms.12062</a>.
  ieee: A. Akopyan and R. Karasev, “A tight estimate for the waist of the ball ,”
    <i>Bulletin of the London Mathematical Society</i>, vol. 49, no. 4. Wiley-Blackwell,
    pp. 690–693, 2017.
  ista: Akopyan A, Karasev R. 2017. A tight estimate for the waist of the ball . Bulletin
    of the London Mathematical Society. 49(4), 690–693.
  mla: Akopyan, Arseniy, and Roman Karasev. “A Tight Estimate for the Waist of the
    Ball .” <i>Bulletin of the London Mathematical Society</i>, vol. 49, no. 4, Wiley-Blackwell,
    2017, pp. 690–93, doi:<a href="https://doi.org/10.1112/blms.12062">10.1112/blms.12062</a>.
  short: A. Akopyan, R. Karasev, Bulletin of the London Mathematical Society 49 (2017)
    690–693.
date_created: 2018-12-11T11:48:02Z
date_published: 2017-08-01T00:00:00Z
date_updated: 2021-01-12T08:11:41Z
day: '01'
department:
- _id: HeEd
doi: 10.1112/blms.12062
ec_funded: 1
intvolume: '        49'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1608.06279
month: '08'
oa: 1
oa_version: Preprint
page: 690 - 693
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
publication: Bulletin of the London Mathematical Society
publication_identifier:
  issn:
  - '00246093'
publication_status: published
publisher: Wiley-Blackwell
publist_id: '6982'
quality_controlled: '1'
scopus_import: 1
status: public
title: 'A tight estimate for the waist of the ball '
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 49
year: '2017'
...
---
_id: '718'
abstract:
- lang: eng
  text: Mapping every simplex in the Delaunay mosaic of a discrete point set to the
    radius of the smallest empty circumsphere gives a generalized discrete Morse function.
    Choosing the points from a Poisson point process in ℝ n , we study the expected
    number of simplices in the Delaunay mosaic as well as the expected number of critical
    simplices and nonsingular intervals in the corresponding generalized discrete
    gradient. Observing connections with other probabilistic models, we obtain precise
    expressions for the expected numbers in low dimensions. In particular, we obtain
    the expected numbers of simplices in the Poisson–Delaunay mosaic in dimensions
    n ≤ 4.
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: Anton
  full_name: Nikitenko, Anton
  id: 3E4FF1BA-F248-11E8-B48F-1D18A9856A87
  last_name: Nikitenko
  orcid: 0000-0002-0659-3201
- first_name: Matthias
  full_name: Reitzner, Matthias
  last_name: Reitzner
citation:
  ama: Edelsbrunner H, Nikitenko A, Reitzner M. Expected sizes of poisson Delaunay
    mosaics and their discrete Morse functions. <i>Advances in Applied Probability</i>.
    2017;49(3):745-767. doi:<a href="https://doi.org/10.1017/apr.2017.20">10.1017/apr.2017.20</a>
  apa: Edelsbrunner, H., Nikitenko, A., &#38; Reitzner, M. (2017). Expected sizes
    of poisson Delaunay mosaics and their discrete Morse functions. <i>Advances in
    Applied Probability</i>. Cambridge University Press. <a href="https://doi.org/10.1017/apr.2017.20">https://doi.org/10.1017/apr.2017.20</a>
  chicago: Edelsbrunner, Herbert, Anton Nikitenko, and Matthias Reitzner. “Expected
    Sizes of Poisson Delaunay Mosaics and Their Discrete Morse Functions.” <i>Advances
    in Applied Probability</i>. Cambridge University Press, 2017. <a href="https://doi.org/10.1017/apr.2017.20">https://doi.org/10.1017/apr.2017.20</a>.
  ieee: H. Edelsbrunner, A. Nikitenko, and M. Reitzner, “Expected sizes of poisson
    Delaunay mosaics and their discrete Morse functions,” <i>Advances in Applied Probability</i>,
    vol. 49, no. 3. Cambridge University Press, pp. 745–767, 2017.
  ista: Edelsbrunner H, Nikitenko A, Reitzner M. 2017. Expected sizes of poisson Delaunay
    mosaics and their discrete Morse functions. Advances in Applied Probability. 49(3),
    745–767.
  mla: Edelsbrunner, Herbert, et al. “Expected Sizes of Poisson Delaunay Mosaics and
    Their Discrete Morse Functions.” <i>Advances in Applied Probability</i>, vol.
    49, no. 3, Cambridge University Press, 2017, pp. 745–67, doi:<a href="https://doi.org/10.1017/apr.2017.20">10.1017/apr.2017.20</a>.
  short: H. Edelsbrunner, A. Nikitenko, M. Reitzner, Advances in Applied Probability
    49 (2017) 745–767.
date_created: 2018-12-11T11:48:07Z
date_published: 2017-09-01T00:00:00Z
date_updated: 2023-09-07T12:07:12Z
day: '01'
department:
- _id: HeEd
doi: 10.1017/apr.2017.20
ec_funded: 1
external_id:
  arxiv:
  - '1607.05915'
intvolume: '        49'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1607.05915
month: '09'
oa: 1
oa_version: Preprint
page: 745 - 767
project:
- _id: 255D761E-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '318493'
  name: Topological Complex Systems
- _id: 2561EBF4-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: I02979-N35
  name: Persistence and stability of geometric complexes
publication: Advances in Applied Probability
publication_identifier:
  issn:
  - '00018678'
publication_status: published
publisher: Cambridge University Press
publist_id: '6962'
quality_controlled: '1'
related_material:
  record:
  - id: '6287'
    relation: dissertation_contains
    status: public
scopus_import: 1
status: public
title: Expected sizes of poisson Delaunay mosaics and their discrete Morse functions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 49
year: '2017'
...
---
_id: '737'
abstract:
- lang: eng
  text: We generalize Brazas’ topology on the fundamental group to the whole universal
    path space X˜ i.e., to the set of homotopy classes of all based paths. We develop
    basic properties of the new notion and provide a complete comparison of the obtained
    topology with the established topologies, in particular with the Lasso topology
    and the CO topology, i.e., the topology that is induced by the compact-open topology.
    It turns out that the new topology is the finest topology contained in the CO
    topology, for which the action of the fundamental group on the universal path
    space is a continuous group action.
article_processing_charge: No
author:
- first_name: Ziga
  full_name: Virk, Ziga
  id: 2E36B656-F248-11E8-B48F-1D18A9856A87
  last_name: Virk
- first_name: Andreas
  full_name: Zastrow, Andreas
  last_name: Zastrow
citation:
  ama: Virk Z, Zastrow A. A new topology on the universal path space. <i>Topology
    and its Applications</i>. 2017;231:186-196. doi:<a href="https://doi.org/10.1016/j.topol.2017.09.015">10.1016/j.topol.2017.09.015</a>
  apa: Virk, Z., &#38; Zastrow, A. (2017). A new topology on the universal path space.
    <i>Topology and Its Applications</i>. Elsevier. <a href="https://doi.org/10.1016/j.topol.2017.09.015">https://doi.org/10.1016/j.topol.2017.09.015</a>
  chicago: Virk, Ziga, and Andreas Zastrow. “A New Topology on the Universal Path
    Space.” <i>Topology and Its Applications</i>. Elsevier, 2017. <a href="https://doi.org/10.1016/j.topol.2017.09.015">https://doi.org/10.1016/j.topol.2017.09.015</a>.
  ieee: Z. Virk and A. Zastrow, “A new topology on the universal path space,” <i>Topology
    and its Applications</i>, vol. 231. Elsevier, pp. 186–196, 2017.
  ista: Virk Z, Zastrow A. 2017. A new topology on the universal path space. Topology
    and its Applications. 231, 186–196.
  mla: Virk, Ziga, and Andreas Zastrow. “A New Topology on the Universal Path Space.”
    <i>Topology and Its Applications</i>, vol. 231, Elsevier, 2017, pp. 186–96, doi:<a
    href="https://doi.org/10.1016/j.topol.2017.09.015">10.1016/j.topol.2017.09.015</a>.
  short: Z. Virk, A. Zastrow, Topology and Its Applications 231 (2017) 186–196.
date_created: 2018-12-11T11:48:14Z
date_published: 2017-11-01T00:00:00Z
date_updated: 2023-09-27T12:53:01Z
day: '01'
department:
- _id: HeEd
doi: 10.1016/j.topol.2017.09.015
external_id:
  isi:
  - '000413889100012'
intvolume: '       231'
isi: 1
language:
- iso: eng
month: '11'
oa_version: None
page: 186 - 196
publication: Topology and its Applications
publication_identifier:
  issn:
  - '01668641'
publication_status: published
publisher: Elsevier
publist_id: '6930'
quality_controlled: '1'
scopus_import: '1'
status: public
title: A new topology on the universal path space
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 231
year: '2017'
...
---
_id: '1433'
abstract:
- lang: eng
  text: Phat is an open-source C. ++ library for the computation of persistent homology
    by matrix reduction, targeted towards developers of software for topological data
    analysis. We aim for a simple generic design that decouples algorithms from data
    structures without sacrificing efficiency or user-friendliness. We provide numerous
    different reduction strategies as well as data types to store and manipulate the
    boundary matrix. We compare the different combinations through extensive experimental
    evaluation and identify optimization techniques that work well in practical situations.
    We also compare our software with various other publicly available libraries for
    persistent homology.
article_processing_charge: No
article_type: original
author:
- first_name: Ulrich
  full_name: Bauer, Ulrich
  last_name: Bauer
- first_name: Michael
  full_name: Kerber, Michael
  last_name: Kerber
- first_name: Jan
  full_name: Reininghaus, Jan
  last_name: Reininghaus
- first_name: Hubert
  full_name: Wagner, Hubert
  id: 379CA8B8-F248-11E8-B48F-1D18A9856A87
  last_name: Wagner
citation:
  ama: Bauer U, Kerber M, Reininghaus J, Wagner H. Phat - Persistent homology algorithms
    toolbox. <i>Journal of Symbolic Computation</i>. 2017;78:76-90. doi:<a href="https://doi.org/10.1016/j.jsc.2016.03.008">10.1016/j.jsc.2016.03.008</a>
  apa: Bauer, U., Kerber, M., Reininghaus, J., &#38; Wagner, H. (2017). Phat - Persistent
    homology algorithms toolbox. <i>Journal of Symbolic Computation</i>. Academic
    Press. <a href="https://doi.org/10.1016/j.jsc.2016.03.008">https://doi.org/10.1016/j.jsc.2016.03.008</a>
  chicago: Bauer, Ulrich, Michael Kerber, Jan Reininghaus, and Hubert Wagner. “Phat
    - Persistent Homology Algorithms Toolbox.” <i>Journal of Symbolic Computation</i>.
    Academic Press, 2017. <a href="https://doi.org/10.1016/j.jsc.2016.03.008">https://doi.org/10.1016/j.jsc.2016.03.008</a>.
  ieee: U. Bauer, M. Kerber, J. Reininghaus, and H. Wagner, “Phat - Persistent homology
    algorithms toolbox,” <i>Journal of Symbolic Computation</i>, vol. 78. Academic
    Press, pp. 76–90, 2017.
  ista: Bauer U, Kerber M, Reininghaus J, Wagner H. 2017. Phat - Persistent homology
    algorithms toolbox. Journal of Symbolic Computation. 78, 76–90.
  mla: Bauer, Ulrich, et al. “Phat - Persistent Homology Algorithms Toolbox.” <i>Journal
    of Symbolic Computation</i>, vol. 78, Academic Press, 2017, pp. 76–90, doi:<a
    href="https://doi.org/10.1016/j.jsc.2016.03.008">10.1016/j.jsc.2016.03.008</a>.
  short: U. Bauer, M. Kerber, J. Reininghaus, H. Wagner, Journal of Symbolic Computation
    78 (2017) 76–90.
date_created: 2018-12-11T11:51:59Z
date_published: 2017-01-01T00:00:00Z
date_updated: 2023-09-20T09:42:40Z
day: '01'
department:
- _id: HeEd
doi: 10.1016/j.jsc.2016.03.008
ec_funded: 1
external_id:
  isi:
  - '000384396000005'
intvolume: '        78'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1016/j.jsc.2016.03.008
month: '01'
oa: 1
oa_version: Published Version
page: 76 - 90
project:
- _id: 255D761E-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '318493'
  name: Topological Complex Systems
publication: Journal of Symbolic Computation
publication_identifier:
  issn:
  - ' 07477171'
publication_status: published
publisher: Academic Press
publist_id: '5765'
quality_controlled: '1'
related_material:
  record:
  - id: '10894'
    relation: earlier_version
    status: public
scopus_import: '1'
status: public
title: Phat - Persistent homology algorithms toolbox
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 78
year: '2017'
...
---
_id: '568'
abstract:
- lang: eng
  text: 'We study robust properties of zero sets of continuous maps f: X → ℝn. Formally,
    we analyze the family Z&lt; r(f) := (g-1(0): ||g - f|| &lt; r) of all zero sets
    of all continuous maps g closer to f than r in the max-norm. All of these sets
    are outside A := (x: |f(x)| ≥ r) and we claim that Z&lt; r(f) is fully determined
    by A and an element of a certain cohomotopy group which (by a recent result) is
    computable whenever the dimension of X is at most 2n - 3. By considering all r
    &gt; 0 simultaneously, the pointed cohomotopy groups form a persistence module-a
    structure leading to persistence diagrams as in the case of persistent homology
    or well groups. Eventually, we get a descriptor of persistent robust properties
    of zero sets that has better descriptive power (Theorem A) and better computability
    status (Theorem B) than the established well diagrams. Moreover, if we endow every
    point of each zero set with gradients of the perturbation, the robust description
    of the zero sets by elements of cohomotopy groups is in some sense the best possible
    (Theorem C).'
author:
- first_name: Peter
  full_name: Franek, Peter
  id: 473294AE-F248-11E8-B48F-1D18A9856A87
  last_name: Franek
- first_name: Marek
  full_name: Krcál, Marek
  id: 33E21118-F248-11E8-B48F-1D18A9856A87
  last_name: Krcál
citation:
  ama: Franek P, Krcál M. Persistence of zero sets. <i>Homology, Homotopy and Applications</i>.
    2017;19(2):313-342. doi:<a href="https://doi.org/10.4310/HHA.2017.v19.n2.a16">10.4310/HHA.2017.v19.n2.a16</a>
  apa: Franek, P., &#38; Krcál, M. (2017). Persistence of zero sets. <i>Homology,
    Homotopy and Applications</i>. International Press. <a href="https://doi.org/10.4310/HHA.2017.v19.n2.a16">https://doi.org/10.4310/HHA.2017.v19.n2.a16</a>
  chicago: Franek, Peter, and Marek Krcál. “Persistence of Zero Sets.” <i>Homology,
    Homotopy and Applications</i>. International Press, 2017. <a href="https://doi.org/10.4310/HHA.2017.v19.n2.a16">https://doi.org/10.4310/HHA.2017.v19.n2.a16</a>.
  ieee: P. Franek and M. Krcál, “Persistence of zero sets,” <i>Homology, Homotopy
    and Applications</i>, vol. 19, no. 2. International Press, pp. 313–342, 2017.
  ista: Franek P, Krcál M. 2017. Persistence of zero sets. Homology, Homotopy and
    Applications. 19(2), 313–342.
  mla: Franek, Peter, and Marek Krcál. “Persistence of Zero Sets.” <i>Homology, Homotopy
    and Applications</i>, vol. 19, no. 2, International Press, 2017, pp. 313–42, doi:<a
    href="https://doi.org/10.4310/HHA.2017.v19.n2.a16">10.4310/HHA.2017.v19.n2.a16</a>.
  short: P. Franek, M. Krcál, Homology, Homotopy and Applications 19 (2017) 313–342.
date_created: 2018-12-11T11:47:14Z
date_published: 2017-01-01T00:00:00Z
date_updated: 2021-01-12T08:03:12Z
day: '01'
department:
- _id: UlWa
- _id: HeEd
doi: 10.4310/HHA.2017.v19.n2.a16
ec_funded: 1
intvolume: '        19'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1507.04310
month: '01'
oa: 1
oa_version: Submitted Version
page: 313 - 342
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '291734'
  name: International IST Postdoc Fellowship Programme
- _id: 2590DB08-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '701309'
  name: Atomic-Resolution Structures of Mitochondrial Respiratory Chain Supercomplexes
    (H2020)
publication: Homology, Homotopy and Applications
publication_identifier:
  issn:
  - '15320073'
publication_status: published
publisher: International Press
publist_id: '7246'
quality_controlled: '1'
scopus_import: 1
status: public
title: Persistence of zero sets
type: journal_article
user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87
volume: 19
year: '2017'
...
---
_id: '5803'
abstract:
- lang: eng
  text: Different distance metrics produce Voronoi diagrams with different properties.
    It is a well-known that on the (real) 2D plane or even on any 3D plane, a Voronoi
    diagram (VD) based on the Euclidean distance metric produces convex Voronoi regions.
    In this paper, we first show that this metric produces a persistent VD on the
    2D digital plane, as it comprises digitally convex Voronoi regions and hence correctly
    approximates the corresponding VD on the 2D real plane. Next, we show that on
    a 3D digital plane D, the Euclidean metric spanning over its voxel set does not
    guarantee a digital VD which is persistent with the real-space VD. As a solution,
    we introduce a novel concept of functional-plane-convexity, which is ensured by
    the Euclidean metric spanning over the pedal set of D. Necessary proofs and some
    visual result have been provided to adjudge the merit and usefulness of the proposed
    concept.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Ranita
  full_name: Biswas, Ranita
  id: 3C2B033E-F248-11E8-B48F-1D18A9856A87
  last_name: Biswas
  orcid: 0000-0002-5372-7890
- first_name: Partha
  full_name: Bhowmick, Partha
  last_name: Bhowmick
citation:
  ama: 'Biswas R, Bhowmick P. Construction of persistent Voronoi diagram on 3D digital
    plane. In: <i>Combinatorial Image Analysis</i>. Vol 10256. Cham: Springer Nature;
    2017:93-104. doi:<a href="https://doi.org/10.1007/978-3-319-59108-7_8">10.1007/978-3-319-59108-7_8</a>'
  apa: 'Biswas, R., &#38; Bhowmick, P. (2017). Construction of persistent Voronoi
    diagram on 3D digital plane. In <i>Combinatorial image analysis</i> (Vol. 10256,
    pp. 93–104). Cham: Springer Nature. <a href="https://doi.org/10.1007/978-3-319-59108-7_8">https://doi.org/10.1007/978-3-319-59108-7_8</a>'
  chicago: 'Biswas, Ranita, and Partha Bhowmick. “Construction of Persistent Voronoi
    Diagram on 3D Digital Plane.” In <i>Combinatorial Image Analysis</i>, 10256:93–104.
    Cham: Springer Nature, 2017. <a href="https://doi.org/10.1007/978-3-319-59108-7_8">https://doi.org/10.1007/978-3-319-59108-7_8</a>.'
  ieee: 'R. Biswas and P. Bhowmick, “Construction of persistent Voronoi diagram on
    3D digital plane,” in <i>Combinatorial image analysis</i>, vol. 10256, Cham: Springer
    Nature, 2017, pp. 93–104.'
  ista: 'Biswas R, Bhowmick P. 2017.Construction of persistent Voronoi diagram on
    3D digital plane. In: Combinatorial image analysis. LNCS, vol. 10256, 93–104.'
  mla: Biswas, Ranita, and Partha Bhowmick. “Construction of Persistent Voronoi Diagram
    on 3D Digital Plane.” <i>Combinatorial Image Analysis</i>, vol. 10256, Springer
    Nature, 2017, pp. 93–104, doi:<a href="https://doi.org/10.1007/978-3-319-59108-7_8">10.1007/978-3-319-59108-7_8</a>.
  short: R. Biswas, P. Bhowmick, in:, Combinatorial Image Analysis, Springer Nature,
    Cham, 2017, pp. 93–104.
conference:
  end_date: 2017-06-21
  location: Plovdiv, Bulgaria
  name: 'IWCIA: International Workshop on Combinatorial Image Analysis'
  start_date: 2017-06-19
date_created: 2019-01-08T20:42:56Z
date_published: 2017-05-17T00:00:00Z
date_updated: 2022-01-28T07:48:24Z
day: '17'
department:
- _id: HeEd
doi: 10.1007/978-3-319-59108-7_8
extern: '1'
intvolume: '     10256'
language:
- iso: eng
month: '05'
oa_version: None
page: 93-104
place: Cham
publication: Combinatorial image analysis
publication_identifier:
  isbn:
  - 978-3-319-59107-0
  - 978-3-319-59108-7
  issn:
  - 0302-9743
  - 1611-3349
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Construction of persistent Voronoi diagram on 3D digital plane
type: book_chapter
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 10256
year: '2017'
...
