---
_id: '1563'
abstract:
- lang: eng
  text: For a given self-map $f$ of $M$, a closed smooth connected and simply-connected
    manifold of dimension $m\geq 4$, we provide an algorithm for estimating the values
    of the topological invariant $D^m_r[f]$, which equals the minimal number of $r$-periodic
    points in the smooth homotopy class of $f$. Our results are based on the combinatorial
    scheme for computing $D^m_r[f]$ introduced by G. Graff and J. Jezierski [J. Fixed
    Point Theory Appl. 13 (2013), 63-84]. An open-source implementation of the algorithm
    programmed in C++ is publicly available at {\tt http://www.pawelpilarczyk.com/combtop/}.
author:
- first_name: Grzegorz
  full_name: Graff, Grzegorz
  last_name: Graff
- first_name: Pawel
  full_name: Pilarczyk, Pawel
  id: 3768D56A-F248-11E8-B48F-1D18A9856A87
  last_name: Pilarczyk
citation:
  ama: Graff G, Pilarczyk P. An algorithmic approach to estimating the minimal number
    of periodic points for smooth self-maps of simply-connected manifolds. <i>Topological
    Methods in Nonlinear Analysis</i>. 2015;45(1):273-286. doi:<a href="https://doi.org/10.12775/TMNA.2015.014">10.12775/TMNA.2015.014</a>
  apa: Graff, G., &#38; Pilarczyk, P. (2015). An algorithmic approach to estimating
    the minimal number of periodic points for smooth self-maps of simply-connected
    manifolds. <i>Topological Methods in Nonlinear Analysis</i>. Juliusz Schauder
    Center for Nonlinear Studies. <a href="https://doi.org/10.12775/TMNA.2015.014">https://doi.org/10.12775/TMNA.2015.014</a>
  chicago: Graff, Grzegorz, and Pawel Pilarczyk. “An Algorithmic Approach to Estimating
    the Minimal Number of Periodic Points for Smooth Self-Maps of Simply-Connected
    Manifolds.” <i>Topological Methods in Nonlinear Analysis</i>. Juliusz Schauder
    Center for Nonlinear Studies, 2015. <a href="https://doi.org/10.12775/TMNA.2015.014">https://doi.org/10.12775/TMNA.2015.014</a>.
  ieee: G. Graff and P. Pilarczyk, “An algorithmic approach to estimating the minimal
    number of periodic points for smooth self-maps of simply-connected manifolds,”
    <i>Topological Methods in Nonlinear Analysis</i>, vol. 45, no. 1. Juliusz Schauder
    Center for Nonlinear Studies, pp. 273–286, 2015.
  ista: Graff G, Pilarczyk P. 2015. An algorithmic approach to estimating the minimal
    number of periodic points for smooth self-maps of simply-connected manifolds.
    Topological Methods in Nonlinear Analysis. 45(1), 273–286.
  mla: Graff, Grzegorz, and Pawel Pilarczyk. “An Algorithmic Approach to Estimating
    the Minimal Number of Periodic Points for Smooth Self-Maps of Simply-Connected
    Manifolds.” <i>Topological Methods in Nonlinear Analysis</i>, vol. 45, no. 1,
    Juliusz Schauder Center for Nonlinear Studies, 2015, pp. 273–86, doi:<a href="https://doi.org/10.12775/TMNA.2015.014">10.12775/TMNA.2015.014</a>.
  short: G. Graff, P. Pilarczyk, Topological Methods in Nonlinear Analysis 45 (2015)
    273–286.
date_created: 2018-12-11T11:52:44Z
date_published: 2015-03-01T00:00:00Z
date_updated: 2021-01-12T06:51:37Z
day: '01'
department:
- _id: HeEd
doi: 10.12775/TMNA.2015.014
intvolume: '        45'
issue: '1'
language:
- iso: eng
month: '03'
oa_version: None
page: 273 - 286
publication: Topological Methods in Nonlinear Analysis
publication_status: published
publisher: Juliusz Schauder Center for Nonlinear Studies
publist_id: '5608'
quality_controlled: '1'
scopus_import: 1
status: public
title: An algorithmic approach to estimating the minimal number of periodic points
  for smooth self-maps of simply-connected manifolds
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 45
year: '2015'
...
---
_id: '1567'
abstract:
- lang: eng
  text: My personal journey to the fascinating world of geometric forms started more
    than 30 years ago with the invention of alpha shapes in the plane. It took about
    10 years before we generalized the concept to higher dimensions, we produced working
    software with a graphics interface for the three-dimensional case. At the same
    time, we added homology to the computations. Needless to say that this foreshadowed
    the inception of persistent homology, because it suggested the study of filtrations
    to capture the scale of a shape or data set. Importantly, this method has fast
    algorithms. The arguably most useful result on persistent homology is the stability
    of its diagrams under perturbations.
alternative_title:
- LNCS
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
citation:
  ama: 'Edelsbrunner H. Shape, homology, persistence, and stability. In: <i>23rd International
    Symposium</i>. Vol 9411. Springer Nature; 2015.'
  apa: 'Edelsbrunner, H. (2015). Shape, homology, persistence, and stability. In <i>23rd
    International Symposium</i> (Vol. 9411). Los Angeles, CA, United States: Springer
    Nature.'
  chicago: Edelsbrunner, Herbert. “Shape, Homology, Persistence, and Stability.” In
    <i>23rd International Symposium</i>, Vol. 9411. Springer Nature, 2015.
  ieee: H. Edelsbrunner, “Shape, homology, persistence, and stability,” in <i>23rd
    International Symposium</i>, Los Angeles, CA, United States, 2015, vol. 9411.
  ista: 'Edelsbrunner H. 2015. Shape, homology, persistence, and stability. 23rd International
    Symposium. GD: Graph Drawing and Network Visualization, LNCS, vol. 9411.'
  mla: Edelsbrunner, Herbert. “Shape, Homology, Persistence, and Stability.” <i>23rd
    International Symposium</i>, vol. 9411, Springer Nature, 2015.
  short: H. Edelsbrunner, in:, 23rd International Symposium, Springer Nature, 2015.
conference:
  end_date: 2015-09-26
  location: Los Angeles, CA, United States
  name: 'GD: Graph Drawing and Network Visualization'
  start_date: 2015-09-24
date_created: 2018-12-11T11:52:46Z
date_published: 2015-01-01T00:00:00Z
date_updated: 2022-01-28T08:25:00Z
day: '01'
department:
- _id: HeEd
intvolume: '      9411'
language:
- iso: eng
month: '01'
oa_version: None
publication: 23rd International Symposium
publication_status: published
publisher: Springer Nature
publist_id: '5604'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Shape, homology, persistence, and stability
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 9411
year: '2015'
...
---
_id: '1568'
abstract:
- lang: eng
  text: Aiming at the automatic diagnosis of tumors from narrow band imaging (NBI)
    magnifying endoscopy (ME) images of the stomach, we combine methods from image
    processing, computational topology, and machine learning to classify patterns
    into normal, tubular, vessel. Training the algorithm on a small number of images
    of each type, we achieve a high rate of correct classifications. The analysis
    of the learning algorithm reveals that a handful of geometric and topological
    features are responsible for the overwhelming majority of decisions.
acknowledgement: This research is supported by the project No. 477 of P.G. Demidov
  Yaroslavl State University within State Assignment for Research.
author:
- first_name: Olga
  full_name: Dunaeva, Olga
  last_name: Dunaeva
- 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: Lukyanov, Anton
  last_name: Lukyanov
- first_name: Michael
  full_name: Machin, Michael
  last_name: Machin
- first_name: Daria
  full_name: Malkova, Daria
  last_name: Malkova
citation:
  ama: 'Dunaeva O, Edelsbrunner H, Lukyanov A, Machin M, Malkova D. The classification
    of endoscopy images with persistent homology. In: <i>Proceedings - 16th International
    Symposium on Symbolic and Numeric Algorithms for Scientific Computing</i>. IEEE;
    2015:7034731. doi:<a href="https://doi.org/10.1109/SYNASC.2014.81">10.1109/SYNASC.2014.81</a>'
  apa: 'Dunaeva, O., Edelsbrunner, H., Lukyanov, A., Machin, M., &#38; Malkova, D.
    (2015). The classification of endoscopy images with persistent homology. In <i>Proceedings
    - 16th International Symposium on Symbolic and Numeric Algorithms for Scientific
    Computing</i> (p. 7034731). Timisoara, Romania: IEEE. <a href="https://doi.org/10.1109/SYNASC.2014.81">https://doi.org/10.1109/SYNASC.2014.81</a>'
  chicago: Dunaeva, Olga, Herbert Edelsbrunner, Anton Lukyanov, Michael Machin, and
    Daria Malkova. “The Classification of Endoscopy Images with Persistent Homology.”
    In <i>Proceedings - 16th International Symposium on Symbolic and Numeric Algorithms
    for Scientific Computing</i>, 7034731. IEEE, 2015. <a href="https://doi.org/10.1109/SYNASC.2014.81">https://doi.org/10.1109/SYNASC.2014.81</a>.
  ieee: O. Dunaeva, H. Edelsbrunner, A. Lukyanov, M. Machin, and D. Malkova, “The
    classification of endoscopy images with persistent homology,” in <i>Proceedings
    - 16th International Symposium on Symbolic and Numeric Algorithms for Scientific
    Computing</i>, Timisoara, Romania, 2015, p. 7034731.
  ista: 'Dunaeva O, Edelsbrunner H, Lukyanov A, Machin M, Malkova D. 2015. The classification
    of endoscopy images with persistent homology. Proceedings - 16th International
    Symposium on Symbolic and Numeric Algorithms for Scientific Computing. SYNASC:
    Symbolic and Numeric Algorithms for Scientific Computing, 7034731.'
  mla: Dunaeva, Olga, et al. “The Classification of Endoscopy Images with Persistent
    Homology.” <i>Proceedings - 16th International Symposium on Symbolic and Numeric
    Algorithms for Scientific Computing</i>, IEEE, 2015, p. 7034731, doi:<a href="https://doi.org/10.1109/SYNASC.2014.81">10.1109/SYNASC.2014.81</a>.
  short: O. Dunaeva, H. Edelsbrunner, A. Lukyanov, M. Machin, D. Malkova, in:, Proceedings
    - 16th International Symposium on Symbolic and Numeric Algorithms for Scientific
    Computing, IEEE, 2015, p. 7034731.
conference:
  end_date: 2014-09-25
  location: Timisoara, Romania
  name: 'SYNASC: Symbolic and Numeric Algorithms for Scientific Computing'
  start_date: 2014-09-22
date_created: 2018-12-11T11:52:46Z
date_published: 2015-02-05T00:00:00Z
date_updated: 2023-02-21T16:57:29Z
day: '05'
department:
- _id: HeEd
doi: 10.1109/SYNASC.2014.81
language:
- iso: eng
month: '02'
oa_version: None
page: '7034731'
publication: Proceedings - 16th International Symposium on Symbolic and Numeric Algorithms
  for Scientific Computing
publication_status: published
publisher: IEEE
publist_id: '5603'
quality_controlled: '1'
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title: The classification of endoscopy images with persistent homology
type: conference
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year: '2015'
...
---
_id: '1578'
abstract:
- lang: eng
  text: We prove that the dual of the digital Voronoi diagram constructed by flooding
    the plane from the data points gives a geometrically and topologically correct
    dual triangulation. This provides the proof of correctness for recently developed
    GPU algorithms that outperform traditional CPU algorithms for constructing two-dimensional
    Delaunay triangulations.
acknowledgement: "The research of the second author is partially supported by NSF
  under grant DBI-0820624 and by DARPA under grants HR011-05-1-0057 and HR0011-09-006\r\n"
author:
- first_name: Thanhtung
  full_name: Cao, Thanhtung
  last_name: Cao
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
- first_name: Tiowseng
  full_name: Tan, Tiowseng
  last_name: Tan
citation:
  ama: Cao T, Edelsbrunner H, Tan T. Triangulations from topologically correct digital
    Voronoi diagrams. <i>Computational Geometry</i>. 2015;48(7):507-519. doi:<a href="https://doi.org/10.1016/j.comgeo.2015.04.001">10.1016/j.comgeo.2015.04.001</a>
  apa: Cao, T., Edelsbrunner, H., &#38; Tan, T. (2015). Triangulations from topologically
    correct digital Voronoi diagrams. <i>Computational Geometry</i>. Elsevier. <a
    href="https://doi.org/10.1016/j.comgeo.2015.04.001">https://doi.org/10.1016/j.comgeo.2015.04.001</a>
  chicago: Cao, Thanhtung, Herbert Edelsbrunner, and Tiowseng Tan. “Triangulations
    from Topologically Correct Digital Voronoi Diagrams.” <i>Computational Geometry</i>.
    Elsevier, 2015. <a href="https://doi.org/10.1016/j.comgeo.2015.04.001">https://doi.org/10.1016/j.comgeo.2015.04.001</a>.
  ieee: T. Cao, H. Edelsbrunner, and T. Tan, “Triangulations from topologically correct
    digital Voronoi diagrams,” <i>Computational Geometry</i>, vol. 48, no. 7. Elsevier,
    pp. 507–519, 2015.
  ista: Cao T, Edelsbrunner H, Tan T. 2015. Triangulations from topologically correct
    digital Voronoi diagrams. Computational Geometry. 48(7), 507–519.
  mla: Cao, Thanhtung, et al. “Triangulations from Topologically Correct Digital Voronoi
    Diagrams.” <i>Computational Geometry</i>, vol. 48, no. 7, Elsevier, 2015, pp.
    507–19, doi:<a href="https://doi.org/10.1016/j.comgeo.2015.04.001">10.1016/j.comgeo.2015.04.001</a>.
  short: T. Cao, H. Edelsbrunner, T. Tan, Computational Geometry 48 (2015) 507–519.
date_created: 2018-12-11T11:52:49Z
date_published: 2015-08-01T00:00:00Z
date_updated: 2021-01-12T06:51:43Z
day: '01'
department:
- _id: HeEd
doi: 10.1016/j.comgeo.2015.04.001
intvolume: '        48'
issue: '7'
language:
- iso: eng
month: '08'
oa_version: None
page: 507 - 519
publication: Computational Geometry
publication_status: published
publisher: Elsevier
publist_id: '5593'
quality_controlled: '1'
scopus_import: 1
status: public
title: Triangulations from topologically correct digital Voronoi diagrams
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 48
year: '2015'
...
---
_id: '1582'
abstract:
- lang: eng
  text: We investigate weighted straight skeletons from a geometric, graph-theoretical,
    and combinatorial point of view. We start with a thorough definition and shed
    light on some ambiguity issues in the procedural definition. We investigate the
    geometry, combinatorics, and topology of faces and the roof model, and we discuss
    in which cases a weighted straight skeleton is connected. Finally, we show that
    the weighted straight skeleton of even a simple polygon may be non-planar and
    may contain cycles, and we discuss under which restrictions on the weights and/or
    the input polygon the weighted straight skeleton still behaves similar to its
    unweighted counterpart. In particular, we obtain a non-procedural description
    and a linear-time construction algorithm for the straight skeleton of strictly
    convex polygons with arbitrary weights.
author:
- first_name: Therese
  full_name: Biedl, Therese
  last_name: Biedl
- first_name: Martin
  full_name: Held, Martin
  last_name: Held
- first_name: Stefan
  full_name: Huber, Stefan
  id: 4700A070-F248-11E8-B48F-1D18A9856A87
  last_name: Huber
  orcid: 0000-0002-8871-5814
- first_name: Dominik
  full_name: Kaaser, Dominik
  last_name: Kaaser
- first_name: Peter
  full_name: Palfrader, Peter
  last_name: Palfrader
citation:
  ama: 'Biedl T, Held M, Huber S, Kaaser D, Palfrader P. Weighted straight skeletons
    in the plane. <i>Computational Geometry: Theory and Applications</i>. 2015;48(2):120-133.
    doi:<a href="https://doi.org/10.1016/j.comgeo.2014.08.006">10.1016/j.comgeo.2014.08.006</a>'
  apa: 'Biedl, T., Held, M., Huber, S., Kaaser, D., &#38; Palfrader, P. (2015). Weighted
    straight skeletons in the plane. <i>Computational Geometry: Theory and Applications</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.comgeo.2014.08.006">https://doi.org/10.1016/j.comgeo.2014.08.006</a>'
  chicago: 'Biedl, Therese, Martin Held, Stefan Huber, Dominik Kaaser, and Peter Palfrader.
    “Weighted Straight Skeletons in the Plane.” <i>Computational Geometry: Theory
    and Applications</i>. Elsevier, 2015. <a href="https://doi.org/10.1016/j.comgeo.2014.08.006">https://doi.org/10.1016/j.comgeo.2014.08.006</a>.'
  ieee: 'T. Biedl, M. Held, S. Huber, D. Kaaser, and P. Palfrader, “Weighted straight
    skeletons in the plane,” <i>Computational Geometry: Theory and Applications</i>,
    vol. 48, no. 2. Elsevier, pp. 120–133, 2015.'
  ista: 'Biedl T, Held M, Huber S, Kaaser D, Palfrader P. 2015. Weighted straight
    skeletons in the plane. Computational Geometry: Theory and Applications. 48(2),
    120–133.'
  mla: 'Biedl, Therese, et al. “Weighted Straight Skeletons in the Plane.” <i>Computational
    Geometry: Theory and Applications</i>, vol. 48, no. 2, Elsevier, 2015, pp. 120–33,
    doi:<a href="https://doi.org/10.1016/j.comgeo.2014.08.006">10.1016/j.comgeo.2014.08.006</a>.'
  short: 'T. Biedl, M. Held, S. Huber, D. Kaaser, P. Palfrader, Computational Geometry:
    Theory and Applications 48 (2015) 120–133.'
date_created: 2018-12-11T11:52:51Z
date_published: 2015-02-01T00:00:00Z
date_updated: 2023-02-23T10:05:27Z
day: '01'
ddc:
- '000'
department:
- _id: HeEd
doi: 10.1016/j.comgeo.2014.08.006
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title: Weighted straight skeletons in the plane
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...
---
_id: '1583'
abstract:
- lang: eng
  text: We study the characteristics of straight skeletons of monotone polygonal chains
    and use them to devise an algorithm for computing positively weighted straight
    skeletons of monotone polygons. Our algorithm runs in O(nlogn) time and O(n) space,
    where n denotes the number of vertices of the polygon.
author:
- first_name: Therese
  full_name: Biedl, Therese
  last_name: Biedl
- first_name: Martin
  full_name: Held, Martin
  last_name: Held
- first_name: Stefan
  full_name: Huber, Stefan
  id: 4700A070-F248-11E8-B48F-1D18A9856A87
  last_name: Huber
  orcid: 0000-0002-8871-5814
- first_name: Dominik
  full_name: Kaaser, Dominik
  last_name: Kaaser
- first_name: Peter
  full_name: Palfrader, Peter
  last_name: Palfrader
citation:
  ama: Biedl T, Held M, Huber S, Kaaser D, Palfrader P. A simple algorithm for computing
    positively weighted straight skeletons of monotone polygons. <i>Information Processing
    Letters</i>. 2015;115(2):243-247. doi:<a href="https://doi.org/10.1016/j.ipl.2014.09.021">10.1016/j.ipl.2014.09.021</a>
  apa: Biedl, T., Held, M., Huber, S., Kaaser, D., &#38; Palfrader, P. (2015). A simple
    algorithm for computing positively weighted straight skeletons of monotone polygons.
    <i>Information Processing Letters</i>. Elsevier. <a href="https://doi.org/10.1016/j.ipl.2014.09.021">https://doi.org/10.1016/j.ipl.2014.09.021</a>
  chicago: Biedl, Therese, Martin Held, Stefan Huber, Dominik Kaaser, and Peter Palfrader.
    “A Simple Algorithm for Computing Positively Weighted Straight Skeletons of Monotone
    Polygons.” <i>Information Processing Letters</i>. Elsevier, 2015. <a href="https://doi.org/10.1016/j.ipl.2014.09.021">https://doi.org/10.1016/j.ipl.2014.09.021</a>.
  ieee: T. Biedl, M. Held, S. Huber, D. Kaaser, and P. Palfrader, “A simple algorithm
    for computing positively weighted straight skeletons of monotone polygons,” <i>Information
    Processing Letters</i>, vol. 115, no. 2. Elsevier, pp. 243–247, 2015.
  ista: Biedl T, Held M, Huber S, Kaaser D, Palfrader P. 2015. A simple algorithm
    for computing positively weighted straight skeletons of monotone polygons. Information
    Processing Letters. 115(2), 243–247.
  mla: Biedl, Therese, et al. “A Simple Algorithm for Computing Positively Weighted
    Straight Skeletons of Monotone Polygons.” <i>Information Processing Letters</i>,
    vol. 115, no. 2, Elsevier, 2015, pp. 243–47, doi:<a href="https://doi.org/10.1016/j.ipl.2014.09.021">10.1016/j.ipl.2014.09.021</a>.
  short: T. Biedl, M. Held, S. Huber, D. Kaaser, P. Palfrader, Information Processing
    Letters 115 (2015) 243–247.
date_created: 2018-12-11T11:52:51Z
date_published: 2015-02-01T00:00:00Z
date_updated: 2021-01-12T06:51:45Z
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ddc:
- '000'
department:
- _id: HeEd
doi: 10.1016/j.ipl.2014.09.021
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title: A simple algorithm for computing positively weighted straight skeletons of
  monotone polygons
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  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 115
year: '2015'
...
---
_id: '1584'
abstract:
- lang: eng
  text: We investigate weighted straight skeletons from a geometric, graph-theoretical,
    and combinatorial point of view. We start with a thorough definition and shed
    light on some ambiguity issues in the procedural definition. We investigate the
    geometry, combinatorics, and topology of faces and the roof model, and we discuss
    in which cases a weighted straight skeleton is connected. Finally, we show that
    the weighted straight skeleton of even a simple polygon may be non-planar and
    may contain cycles, and we discuss under which restrictions on the weights and/or
    the input polygon the weighted straight skeleton still behaves similar to its
    unweighted counterpart. In particular, we obtain a non-procedural description
    and a linear-time construction algorithm for the straight skeleton of strictly
    convex polygons with arbitrary weights.
author:
- first_name: Therese
  full_name: Biedl, Therese
  last_name: Biedl
- first_name: Martin
  full_name: Held, Martin
  last_name: Held
- first_name: Stefan
  full_name: Huber, Stefan
  id: 4700A070-F248-11E8-B48F-1D18A9856A87
  last_name: Huber
  orcid: 0000-0002-8871-5814
- first_name: Dominik
  full_name: Kaaser, Dominik
  last_name: Kaaser
- first_name: Peter
  full_name: Palfrader, Peter
  last_name: Palfrader
citation:
  ama: 'Biedl T, Held M, Huber S, Kaaser D, Palfrader P. Reprint of: Weighted straight
    skeletons in the plane. <i>Computational Geometry: Theory and Applications</i>.
    2015;48(5):429-442. doi:<a href="https://doi.org/10.1016/j.comgeo.2015.01.004">10.1016/j.comgeo.2015.01.004</a>'
  apa: 'Biedl, T., Held, M., Huber, S., Kaaser, D., &#38; Palfrader, P. (2015). Reprint
    of: Weighted straight skeletons in the plane. <i>Computational Geometry: Theory
    and Applications</i>. Elsevier. <a href="https://doi.org/10.1016/j.comgeo.2015.01.004">https://doi.org/10.1016/j.comgeo.2015.01.004</a>'
  chicago: 'Biedl, Therese, Martin Held, Stefan Huber, Dominik Kaaser, and Peter Palfrader.
    “Reprint of: Weighted Straight Skeletons in the Plane.” <i>Computational Geometry:
    Theory and Applications</i>. Elsevier, 2015. <a href="https://doi.org/10.1016/j.comgeo.2015.01.004">https://doi.org/10.1016/j.comgeo.2015.01.004</a>.'
  ieee: 'T. Biedl, M. Held, S. Huber, D. Kaaser, and P. Palfrader, “Reprint of: Weighted
    straight skeletons in the plane,” <i>Computational Geometry: Theory and Applications</i>,
    vol. 48, no. 5. Elsevier, pp. 429–442, 2015.'
  ista: 'Biedl T, Held M, Huber S, Kaaser D, Palfrader P. 2015. Reprint of: Weighted
    straight skeletons in the plane. Computational Geometry: Theory and Applications.
    48(5), 429–442.'
  mla: 'Biedl, Therese, et al. “Reprint of: Weighted Straight Skeletons in the Plane.”
    <i>Computational Geometry: Theory and Applications</i>, vol. 48, no. 5, Elsevier,
    2015, pp. 429–42, doi:<a href="https://doi.org/10.1016/j.comgeo.2015.01.004">10.1016/j.comgeo.2015.01.004</a>.'
  short: 'T. Biedl, M. Held, S. Huber, D. Kaaser, P. Palfrader, Computational Geometry:
    Theory and Applications 48 (2015) 429–442.'
date_created: 2018-12-11T11:52:51Z
date_published: 2015-07-01T00:00:00Z
date_updated: 2023-02-23T10:05:22Z
day: '01'
ddc:
- '000'
department:
- _id: HeEd
doi: 10.1016/j.comgeo.2015.01.004
file:
- access_level: open_access
  checksum: 5b33719a86f7f4c8e5dc62c1b6893f49
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:17:36Z
  date_updated: 2020-07-14T12:45:03Z
  file_id: '5292'
  file_name: IST-2016-475-v1+1_1-s2.0-S092577211500005X-main.pdf
  file_size: 508379
  relation: main_file
file_date_updated: 2020-07-14T12:45:03Z
has_accepted_license: '1'
intvolume: '        48'
issue: '5'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 429 - 442
publication: 'Computational Geometry: Theory and Applications'
publication_status: published
publisher: Elsevier
publist_id: '5587'
pubrep_id: '475'
quality_controlled: '1'
related_material:
  record:
  - id: '1582'
    relation: other
    status: public
scopus_import: 1
status: public
title: 'Reprint of: Weighted straight skeletons 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: 48
year: '2015'
...
---
_id: '1590'
abstract:
- lang: eng
  text: 'The straight skeleton of a polygon is the geometric graph obtained by tracing
    the vertices during a mitered offsetting process. It is known that the straight
    skeleton of a simple polygon is a tree, and one can naturally derive directions
    on the edges of the tree from the propagation of the shrinking process. In this
    paper, we ask the reverse question: Given a tree with directed edges, can it be
    the straight skeleton of a polygon? And if so, can we find a suitable simple polygon?
    We answer these questions for all directed trees where the order of edges around
    each node is fixed.'
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Oswin
  full_name: Aichholzer, Oswin
  last_name: Aichholzer
- first_name: Therese
  full_name: Biedl, Therese
  last_name: Biedl
- first_name: Thomas
  full_name: Hackl, Thomas
  last_name: Hackl
- first_name: Martin
  full_name: Held, Martin
  last_name: Held
- first_name: Stefan
  full_name: Huber, Stefan
  id: 4700A070-F248-11E8-B48F-1D18A9856A87
  last_name: Huber
  orcid: 0000-0002-8871-5814
- first_name: Peter
  full_name: Palfrader, Peter
  last_name: Palfrader
- first_name: Birgit
  full_name: Vogtenhuber, Birgit
  last_name: Vogtenhuber
citation:
  ama: 'Aichholzer O, Biedl T, Hackl T, et al. Representing directed trees as straight
    skeletons. In: <i>Graph Drawing and Network Visualization</i>. Vol 9411. Springer
    Nature; 2015:335-347. doi:<a href="https://doi.org/10.1007/978-3-319-27261-0_28">10.1007/978-3-319-27261-0_28</a>'
  apa: 'Aichholzer, O., Biedl, T., Hackl, T., Held, M., Huber, S., Palfrader, P.,
    &#38; Vogtenhuber, B. (2015). Representing directed trees as straight skeletons.
    In <i>Graph Drawing and Network Visualization</i> (Vol. 9411, pp. 335–347). Los
    Angeles, CA, United States: Springer Nature. <a href="https://doi.org/10.1007/978-3-319-27261-0_28">https://doi.org/10.1007/978-3-319-27261-0_28</a>'
  chicago: Aichholzer, Oswin, Therese Biedl, Thomas Hackl, Martin Held, Stefan Huber,
    Peter Palfrader, and Birgit Vogtenhuber. “Representing Directed Trees as Straight
    Skeletons.” In <i>Graph Drawing and Network Visualization</i>, 9411:335–47. Springer
    Nature, 2015. <a href="https://doi.org/10.1007/978-3-319-27261-0_28">https://doi.org/10.1007/978-3-319-27261-0_28</a>.
  ieee: O. Aichholzer <i>et al.</i>, “Representing directed trees as straight skeletons,”
    in <i>Graph Drawing and Network Visualization</i>, vol. 9411, Springer Nature,
    2015, pp. 335–347.
  ista: 'Aichholzer O, Biedl T, Hackl T, Held M, Huber S, Palfrader P, Vogtenhuber
    B. 2015.Representing directed trees as straight skeletons. In: Graph Drawing and
    Network Visualization. LNCS, vol. 9411, 335–347.'
  mla: Aichholzer, Oswin, et al. “Representing Directed Trees as Straight Skeletons.”
    <i>Graph Drawing and Network Visualization</i>, vol. 9411, Springer Nature, 2015,
    pp. 335–47, doi:<a href="https://doi.org/10.1007/978-3-319-27261-0_28">10.1007/978-3-319-27261-0_28</a>.
  short: O. Aichholzer, T. Biedl, T. Hackl, M. Held, S. Huber, P. Palfrader, B. Vogtenhuber,
    in:, Graph Drawing and Network Visualization, Springer Nature, 2015, pp. 335–347.
conference:
  end_date: 2015-09-26
  location: Los Angeles, CA, United States
  name: 'GD: International Symposium on Graph Drawing'
  start_date: 2015-09-24
date_created: 2018-12-11T11:52:54Z
date_published: 2015-11-27T00:00:00Z
date_updated: 2022-01-28T09:10:37Z
day: '27'
department:
- _id: HeEd
doi: 10.1007/978-3-319-27261-0_28
intvolume: '      9411'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1508.01076
month: '11'
oa: 1
oa_version: Preprint
page: 335 - 347
publication: Graph Drawing and Network Visualization
publication_identifier:
  eisbn:
  - 978-3-319-27261-0
  isbn:
  - 978-3-319-27260-3
publication_status: published
publisher: Springer Nature
publist_id: '5581'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Representing directed trees as straight skeletons
type: book_chapter
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 9411
year: '2015'
...
---
_id: '1399'
abstract:
- lang: eng
  text: This thesis is concerned with the computation and approximation of intrinsic
    volumes. Given a smooth body M and a certain digital approximation of it, we develop
    algorithms to approximate various intrinsic volumes of M using only measurements
    taken from its digital approximations. The crucial idea behind our novel algorithms
    is to link the recent theory of persistent homology to the theory of intrinsic
    volumes via the Crofton formula from integral geometry and, in particular, via
    Euler characteristic computations. Our main contributions are a multigrid convergent
    digital algorithm to compute the first intrinsic volume of a solid body in R^n
    as well as an appropriate integration pipeline to approximate integral-geometric
    integrals defined over the Grassmannian manifold.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Florian
  full_name: Pausinger, Florian
  id: 2A77D7A2-F248-11E8-B48F-1D18A9856A87
  last_name: Pausinger
  orcid: 0000-0002-8379-3768
citation:
  ama: Pausinger F. On the approximation of intrinsic volumes. 2015.
  apa: Pausinger, F. (2015). <i>On the approximation of intrinsic volumes</i>. Institute
    of Science and Technology Austria.
  chicago: Pausinger, Florian. “On the Approximation of Intrinsic Volumes.” Institute
    of Science and Technology Austria, 2015.
  ieee: F. Pausinger, “On the approximation of intrinsic volumes,” Institute of Science
    and Technology Austria, 2015.
  ista: Pausinger F. 2015. On the approximation of intrinsic volumes. Institute of
    Science and Technology Austria.
  mla: Pausinger, Florian. <i>On the Approximation of Intrinsic Volumes</i>. Institute
    of Science and Technology Austria, 2015.
  short: F. Pausinger, On the Approximation of Intrinsic Volumes, Institute of Science
    and Technology Austria, 2015.
date_created: 2018-12-11T11:51:48Z
date_published: 2015-06-01T00:00:00Z
date_updated: 2023-09-07T11:41:25Z
day: '01'
degree_awarded: PhD
department:
- _id: HeEd
language:
- iso: eng
month: '06'
oa_version: None
page: '144'
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
publist_id: '5808'
related_material:
  record:
  - id: '1662'
    relation: part_of_dissertation
    status: public
  - id: '1792'
    relation: part_of_dissertation
    status: public
  - id: '2255'
    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: On the approximation of intrinsic volumes
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2015'
...
---
_id: '1424'
abstract:
- lang: eng
  text: We consider the problem of statistical computations with persistence diagrams,
    a summary representation of topological features in data. These diagrams encode
    persistent homology, a widely used invariant in topological data analysis. While
    several avenues towards a statistical treatment of the diagrams have been explored
    recently, we follow an alternative route that is motivated by the success of methods
    based on the embedding of probability measures into reproducing kernel Hilbert
    spaces. In fact, a positive definite kernel on persistence diagrams has recently
    been proposed, connecting persistent homology to popular kernel-based learning
    techniques such as support vector machines. However, important properties of that
    kernel enabling a principled use in the context of probability measure embeddings
    remain to be explored. Our contribution is to close this gap by proving universality
    of a variant of the original kernel, and to demonstrate its effective use in twosample
    hypothesis testing on synthetic as well as real-world data.
acknowledgement: This work was partially supported by the Austrian Science FUnd, project
  no. KLI 00012.
alternative_title:
- Advances in Neural Information Processing Systems
author:
- first_name: Roland
  full_name: Kwitt, Roland
  last_name: Kwitt
- first_name: Stefan
  full_name: Huber, Stefan
  id: 4700A070-F248-11E8-B48F-1D18A9856A87
  last_name: Huber
  orcid: 0000-0002-8871-5814
- first_name: Marc
  full_name: Niethammer, Marc
  last_name: Niethammer
- first_name: Weili
  full_name: Lin, Weili
  last_name: Lin
- first_name: Ulrich
  full_name: Bauer, Ulrich
  id: 2ADD483A-F248-11E8-B48F-1D18A9856A87
  last_name: Bauer
  orcid: 0000-0002-9683-0724
citation:
  ama: 'Kwitt R, Huber S, Niethammer M, Lin W, Bauer U. Statistical topological data
    analysis-A kernel perspective. In: Vol 28. Neural Information Processing Systems;
    2015:3070-3078.'
  apa: 'Kwitt, R., Huber, S., Niethammer, M., Lin, W., &#38; Bauer, U. (2015). Statistical
    topological data analysis-A kernel perspective (Vol. 28, pp. 3070–3078). Presented
    at the NIPS: Neural Information Processing Systems, Montreal, Canada: Neural Information
    Processing Systems.'
  chicago: Kwitt, Roland, Stefan Huber, Marc Niethammer, Weili Lin, and Ulrich Bauer.
    “Statistical Topological Data Analysis-A Kernel Perspective,” 28:3070–78. Neural
    Information Processing Systems, 2015.
  ieee: 'R. Kwitt, S. Huber, M. Niethammer, W. Lin, and U. Bauer, “Statistical topological
    data analysis-A kernel perspective,” presented at the NIPS: Neural Information
    Processing Systems, Montreal, Canada, 2015, vol. 28, pp. 3070–3078.'
  ista: 'Kwitt R, Huber S, Niethammer M, Lin W, Bauer U. 2015. Statistical topological
    data analysis-A kernel perspective. NIPS: Neural Information Processing Systems,
    Advances in Neural Information Processing Systems, vol. 28, 3070–3078.'
  mla: Kwitt, Roland, et al. <i>Statistical Topological Data Analysis-A Kernel Perspective</i>.
    Vol. 28, Neural Information Processing Systems, 2015, pp. 3070–78.
  short: R. Kwitt, S. Huber, M. Niethammer, W. Lin, U. Bauer, in:, Neural Information
    Processing Systems, 2015, pp. 3070–3078.
conference:
  end_date: 2015-12-12
  location: Montreal, Canada
  name: 'NIPS: Neural Information Processing Systems'
  start_date: 2015-12-07
date_created: 2018-12-11T11:51:56Z
date_published: 2015-12-01T00:00:00Z
date_updated: 2021-01-12T06:50:38Z
day: '01'
department:
- _id: HeEd
intvolume: '        28'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://papers.nips.cc/paper/5887-statistical-topological-data-analysis-a-kernel-perspective
month: '12'
oa: 1
oa_version: Submitted Version
page: 3070 - 3078
publication_status: published
publisher: Neural Information Processing Systems
publist_id: '5782'
quality_controlled: '1'
status: public
title: Statistical topological data analysis-A kernel perspective
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 28
year: '2015'
...
---
_id: '9737'
article_processing_charge: No
author:
- first_name: Olga
  full_name: Symonova, Olga
  id: 3C0C7BC6-F248-11E8-B48F-1D18A9856A87
  last_name: Symonova
- first_name: Christopher
  full_name: Topp, Christopher
  last_name: Topp
- first_name: Herbert
  full_name: Edelsbrunner, Herbert
  id: 3FB178DA-F248-11E8-B48F-1D18A9856A87
  last_name: Edelsbrunner
  orcid: 0000-0002-9823-6833
citation:
  ama: Symonova O, Topp C, Edelsbrunner H. Root traits computed by DynamicRoots for
    the maize root shown in fig 2. 2015. doi:<a href="https://doi.org/10.1371/journal.pone.0127657.s001">10.1371/journal.pone.0127657.s001</a>
  apa: Symonova, O., Topp, C., &#38; Edelsbrunner, H. (2015). Root traits computed
    by DynamicRoots for the maize root shown in fig 2. Public Library of Science.
    <a href="https://doi.org/10.1371/journal.pone.0127657.s001">https://doi.org/10.1371/journal.pone.0127657.s001</a>
  chicago: Symonova, Olga, Christopher Topp, and Herbert Edelsbrunner. “Root Traits
    Computed by DynamicRoots for the Maize Root Shown in Fig 2.” Public Library of
    Science, 2015. <a href="https://doi.org/10.1371/journal.pone.0127657.s001">https://doi.org/10.1371/journal.pone.0127657.s001</a>.
  ieee: O. Symonova, C. Topp, and H. Edelsbrunner, “Root traits computed by DynamicRoots
    for the maize root shown in fig 2.” Public Library of Science, 2015.
  ista: Symonova O, Topp C, Edelsbrunner H. 2015. Root traits computed by DynamicRoots
    for the maize root shown in fig 2, Public Library of Science, <a href="https://doi.org/10.1371/journal.pone.0127657.s001">10.1371/journal.pone.0127657.s001</a>.
  mla: Symonova, Olga, et al. <i>Root Traits Computed by DynamicRoots for the Maize
    Root Shown in Fig 2</i>. Public Library of Science, 2015, doi:<a href="https://doi.org/10.1371/journal.pone.0127657.s001">10.1371/journal.pone.0127657.s001</a>.
  short: O. Symonova, C. Topp, H. Edelsbrunner, (2015).
date_created: 2021-07-28T06:20:13Z
date_published: 2015-06-01T00:00:00Z
date_updated: 2023-02-23T10:14:42Z
day: '01'
department:
- _id: MaJö
- _id: HeEd
doi: 10.1371/journal.pone.0127657.s001
month: '06'
oa_version: Published Version
publisher: Public Library of Science
related_material:
  record:
  - id: '1793'
    relation: used_in_publication
    status: public
status: public
title: Root traits computed by DynamicRoots for the maize root shown in fig 2
type: research_data_reference
user_id: 6785fbc1-c503-11eb-8a32-93094b40e1cf
year: '2015'
...
---
_id: '2905'
abstract:
- lang: eng
  text: "Persistent homology is a recent grandchild of homology that has found use
    in\r\nscience and engineering as well as in mathematics. This paper surveys the
    method as well\r\nas the applications, neglecting completeness in favor of highlighting
    ideas and directions."
acknowledgement: This research is partially supported by NSF under grant DBI-0820624,
  by ESF under the Research Networking Programme, and by the Russian Government Project
  11.G34.31.0053.
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: Dmitriy
  full_name: Morozovy, Dmitriy
  last_name: Morozovy
citation:
  ama: 'Edelsbrunner H, Morozovy D. Persistent homology: Theory and practice. In:
    European Mathematical Society Publishing House; 2014:31-50. doi:<a href="https://doi.org/10.4171/120-1/3">10.4171/120-1/3</a>'
  apa: 'Edelsbrunner, H., &#38; Morozovy, D. (2014). Persistent homology: Theory and
    practice (pp. 31–50). Presented at the ECM: European Congress of Mathematics,
    Kraków, Poland: European Mathematical Society Publishing House. <a href="https://doi.org/10.4171/120-1/3">https://doi.org/10.4171/120-1/3</a>'
  chicago: 'Edelsbrunner, Herbert, and Dmitriy Morozovy. “Persistent Homology: Theory
    and Practice,” 31–50. European Mathematical Society Publishing House, 2014. <a
    href="https://doi.org/10.4171/120-1/3">https://doi.org/10.4171/120-1/3</a>.'
  ieee: 'H. Edelsbrunner and D. Morozovy, “Persistent homology: Theory and practice,”
    presented at the ECM: European Congress of Mathematics, Kraków, Poland, 2014,
    pp. 31–50.'
  ista: 'Edelsbrunner H, Morozovy D. 2014. Persistent homology: Theory and practice.
    ECM: European Congress of Mathematics, 31–50.'
  mla: 'Edelsbrunner, Herbert, and Dmitriy Morozovy. <i>Persistent Homology: Theory
    and Practice</i>. European Mathematical Society Publishing House, 2014, pp. 31–50,
    doi:<a href="https://doi.org/10.4171/120-1/3">10.4171/120-1/3</a>.'
  short: H. Edelsbrunner, D. Morozovy, in:, European Mathematical Society Publishing
    House, 2014, pp. 31–50.
conference:
  end_date: 2012-07-07
  location: Kraków, Poland
  name: 'ECM: European Congress of Mathematics'
  start_date: 2012-07-02
date_created: 2018-12-11T12:00:16Z
date_published: 2014-01-01T00:00:00Z
date_updated: 2021-01-12T07:00:36Z
day: '01'
ddc:
- '000'
department:
- _id: HeEd
doi: 10.4171/120-1/3
file:
- access_level: open_access
  checksum: 1d4a046f1af945c407c5c4d411d4c5e4
  content_type: application/pdf
  creator: system
  date_created: 2018-12-12T10:16:43Z
  date_updated: 2020-07-14T12:45:52Z
  file_id: '5232'
  file_name: IST-2016-544-v1+1_2012-P-11-PHTheoryPractice.pdf
  file_size: 435320
  relation: main_file
file_date_updated: 2020-07-14T12:45:52Z
has_accepted_license: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Submitted Version
page: 31 - 50
publication_status: published
publisher: European Mathematical Society Publishing House
publist_id: '3842'
pubrep_id: '544'
quality_controlled: '1'
status: public
title: 'Persistent homology: Theory and practice'
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2014'
...
---
_id: '10817'
abstract:
- lang: eng
  text: The Morse-Smale complex can be either explicitly or implicitly represented.
    Depending on the type of representation, the simplification of the Morse-Smale
    complex works differently. In the explicit representation, the Morse-Smale complex
    is directly simplified by explicitly reconnecting the critical points during the
    simplification. In the implicit representation, on the other hand, the Morse-Smale
    complex is given by a combinatorial gradient field. In this setting, the simplification
    changes the combinatorial flow, which yields an indirect simplification of the
    Morse-Smale complex. The topological complexity of the Morse-Smale complex is
    reduced in both representations. However, the simplifications generally yield
    different results. In this chapter, we emphasize properties of the two representations
    that cause these differences. We also provide a complexity analysis of the two
    schemes with respect to running time and memory consumption.
acknowledgement: This research is supported and funded by the Digiteo unTopoVis project,
  the TOPOSYS project FP7-ICT-318493-STREP, and MPC-VCC.
article_processing_charge: No
author:
- first_name: David
  full_name: Günther, David
  last_name: Günther
- first_name: Jan
  full_name: Reininghaus, Jan
  id: 4505473A-F248-11E8-B48F-1D18A9856A87
  last_name: Reininghaus
- first_name: Hans-Peter
  full_name: Seidel, Hans-Peter
  last_name: Seidel
- first_name: Tino
  full_name: Weinkauf, Tino
  last_name: Weinkauf
citation:
  ama: 'Günther D, Reininghaus J, Seidel H-P, Weinkauf T. Notes on the simplification
    of the Morse-Smale complex. In: Bremer P-T, Hotz I, Pascucci V, Peikert R, eds.
    <i>Topological Methods in Data Analysis and Visualization III.</i> Mathematics
    and Visualization. Cham: Springer Nature; 2014:135-150. doi:<a href="https://doi.org/10.1007/978-3-319-04099-8_9">10.1007/978-3-319-04099-8_9</a>'
  apa: 'Günther, D., Reininghaus, J., Seidel, H.-P., &#38; Weinkauf, T. (2014). Notes
    on the simplification of the Morse-Smale complex. In P.-T. Bremer, I. Hotz, V.
    Pascucci, &#38; R. Peikert (Eds.), <i>Topological Methods in Data Analysis and
    Visualization III.</i> (pp. 135–150). Cham: Springer Nature. <a href="https://doi.org/10.1007/978-3-319-04099-8_9">https://doi.org/10.1007/978-3-319-04099-8_9</a>'
  chicago: 'Günther, David, Jan Reininghaus, Hans-Peter Seidel, and Tino Weinkauf.
    “Notes on the Simplification of the Morse-Smale Complex.” In <i>Topological Methods
    in Data Analysis and Visualization III.</i>, edited by Peer-Timo Bremer, Ingrid
    Hotz, Valerio Pascucci, and Ronald Peikert, 135–50. Mathematics and Visualization.
    Cham: Springer Nature, 2014. <a href="https://doi.org/10.1007/978-3-319-04099-8_9">https://doi.org/10.1007/978-3-319-04099-8_9</a>.'
  ieee: 'D. Günther, J. Reininghaus, H.-P. Seidel, and T. Weinkauf, “Notes on the
    simplification of the Morse-Smale complex,” in <i>Topological Methods in Data
    Analysis and Visualization III.</i>, P.-T. Bremer, I. Hotz, V. Pascucci, and R.
    Peikert, Eds. Cham: Springer Nature, 2014, pp. 135–150.'
  ista: 'Günther D, Reininghaus J, Seidel H-P, Weinkauf T. 2014.Notes on the simplification
    of the Morse-Smale complex. In: Topological Methods in Data Analysis and Visualization
    III. , 135–150.'
  mla: Günther, David, et al. “Notes on the Simplification of the Morse-Smale Complex.”
    <i>Topological Methods in Data Analysis and Visualization III.</i>, edited by
    Peer-Timo Bremer et al., Springer Nature, 2014, pp. 135–50, doi:<a href="https://doi.org/10.1007/978-3-319-04099-8_9">10.1007/978-3-319-04099-8_9</a>.
  short: D. Günther, J. Reininghaus, H.-P. Seidel, T. Weinkauf, in:, P.-T. Bremer,
    I. Hotz, V. Pascucci, R. Peikert (Eds.), Topological Methods in Data Analysis
    and Visualization III., Springer Nature, Cham, 2014, pp. 135–150.
date_created: 2022-03-04T08:33:57Z
date_published: 2014-03-19T00:00:00Z
date_updated: 2023-09-05T15:33:45Z
day: '19'
department:
- _id: HeEd
doi: 10.1007/978-3-319-04099-8_9
ec_funded: 1
editor:
- first_name: Peer-Timo
  full_name: Bremer, Peer-Timo
  last_name: Bremer
- first_name: Ingrid
  full_name: Hotz, Ingrid
  last_name: Hotz
- first_name: Valerio
  full_name: Pascucci, Valerio
  last_name: Pascucci
- first_name: Ronald
  full_name: Peikert, Ronald
  last_name: Peikert
language:
- iso: eng
month: '03'
oa_version: None
page: 135-150
place: Cham
project:
- _id: 255D761E-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '318493'
  name: Topological Complex Systems
publication: Topological Methods in Data Analysis and Visualization III.
publication_identifier:
  eisbn:
  - '9783319040998'
  eissn:
  - 2197-666X
  isbn:
  - '9783319040981'
  issn:
  - 1612-3786
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
series_title: Mathematics and Visualization
status: public
title: Notes on the simplification of the Morse-Smale complex
type: book_chapter
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2014'
...
---
_id: '10886'
abstract:
- lang: eng
  text: We propose a method for visualizing two-dimensional symmetric positive definite
    tensor fields using the Heat Kernel Signature (HKS). The HKS is derived from the
    heat kernel and was originally introduced as an isometry invariant shape signature.
    Each positive definite tensor field defines a Riemannian manifold by considering
    the tensor field as a Riemannian metric. On this Riemmanian manifold we can apply
    the definition of the HKS. The resulting scalar quantity is used for the visualization
    of tensor fields. The HKS is closely related to the Gaussian curvature of the
    Riemannian manifold and the time parameter of the heat kernel allows a multiscale
    analysis in a natural way. In this way, the HKS represents field related scale
    space properties, enabling a level of detail analysis of tensor fields. This makes
    the HKS an interesting new scalar quantity for tensor fields, which differs significantly
    from usual tensor invariants like the trace or the determinant. A method for visualization
    and a numerical realization of the HKS for tensor fields is proposed in this chapter.
    To validate the approach we apply it to some illustrating simple examples as isolated
    critical points and to a medical diffusion tensor data set.
acknowledgement: This research is partially supported by the TOPOSYS project FP7-ICT-318493-STREP.
alternative_title:
- Mathematics and Visualization
article_processing_charge: No
author:
- first_name: Valentin
  full_name: Zobel, Valentin
  last_name: Zobel
- first_name: Jan
  full_name: Reininghaus, Jan
  id: 4505473A-F248-11E8-B48F-1D18A9856A87
  last_name: Reininghaus
- first_name: Ingrid
  full_name: Hotz, Ingrid
  last_name: Hotz
citation:
  ama: 'Zobel V, Reininghaus J, Hotz I. Visualization of two-dimensional symmetric
    positive definite tensor fields using the heat kernel signature. In: <i>Topological
    Methods in Data Analysis and Visualization III </i>. Springer; 2014:249-262. doi:<a
    href="https://doi.org/10.1007/978-3-319-04099-8_16">10.1007/978-3-319-04099-8_16</a>'
  apa: Zobel, V., Reininghaus, J., &#38; Hotz, I. (2014). Visualization of two-dimensional
    symmetric positive definite tensor fields using the heat kernel signature. In
    <i>Topological Methods in Data Analysis and Visualization III </i> (pp. 249–262).
    Springer. <a href="https://doi.org/10.1007/978-3-319-04099-8_16">https://doi.org/10.1007/978-3-319-04099-8_16</a>
  chicago: Zobel, Valentin, Jan Reininghaus, and Ingrid Hotz. “Visualization of Two-Dimensional
    Symmetric Positive Definite Tensor Fields Using the Heat Kernel Signature.” In
    <i>Topological Methods in Data Analysis and Visualization III </i>, 249–62. Springer,
    2014. <a href="https://doi.org/10.1007/978-3-319-04099-8_16">https://doi.org/10.1007/978-3-319-04099-8_16</a>.
  ieee: V. Zobel, J. Reininghaus, and I. Hotz, “Visualization of two-dimensional symmetric
    positive definite tensor fields using the heat kernel signature,” in <i>Topological
    Methods in Data Analysis and Visualization III </i>, 2014, pp. 249–262.
  ista: Zobel V, Reininghaus J, Hotz I. 2014. Visualization of two-dimensional symmetric
    positive definite tensor fields using the heat kernel signature. Topological Methods
    in Data Analysis and Visualization III . , Mathematics and Visualization, , 249–262.
  mla: Zobel, Valentin, et al. “Visualization of Two-Dimensional Symmetric Positive
    Definite Tensor Fields Using the Heat Kernel Signature.” <i>Topological Methods
    in Data Analysis and Visualization III </i>, Springer, 2014, pp. 249–62, doi:<a
    href="https://doi.org/10.1007/978-3-319-04099-8_16">10.1007/978-3-319-04099-8_16</a>.
  short: V. Zobel, J. Reininghaus, I. Hotz, in:, Topological Methods in Data Analysis
    and Visualization III , Springer, 2014, pp. 249–262.
date_created: 2022-03-18T13:05:39Z
date_published: 2014-03-19T00:00:00Z
date_updated: 2023-09-05T14:13:16Z
day: '19'
department:
- _id: HeEd
doi: 10.1007/978-3-319-04099-8_16
language:
- iso: eng
month: '03'
oa_version: None
page: 249-262
publication: 'Topological Methods in Data Analysis and Visualization III '
publication_identifier:
  eisbn:
  - '9783319040998'
  eissn:
  - 2197-666X
  isbn:
  - '9783319040981'
  issn:
  - 1612-3786
publication_status: published
publisher: Springer
quality_controlled: '1'
scopus_import: '1'
status: public
title: Visualization of two-dimensional symmetric positive definite tensor fields
  using the heat kernel signature
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2014'
...
---
_id: '10892'
abstract:
- lang: eng
  text: "In this paper, we introduce planar matchings on directed pseudo-line arrangements,
    which yield a planar set of pseudo-line segments such that only matching-partners
    are adjacent. By translating the planar matching problem into a corresponding
    stable roommates problem we show that such matchings always exist.\r\nUsing our
    new framework, we establish, for the first time, a complete, rigorous definition
    of weighted straight skeletons, which are based on a so-called wavefront propagation
    process. We present a generalized and unified approach to treat structural changes
    in the wavefront that focuses on the restoration of weak planarity by finding
    planar matchings."
acknowledgement: 'T. Biedl was supported by NSERC and the Ross and Muriel Cheriton
  Fellowship. P. Palfrader was supported by Austrian Science Fund (FWF): P25816-N15.'
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Therese
  full_name: Biedl, Therese
  last_name: Biedl
- first_name: Stefan
  full_name: Huber, Stefan
  id: 4700A070-F248-11E8-B48F-1D18A9856A87
  last_name: Huber
  orcid: 0000-0002-8871-5814
- first_name: Peter
  full_name: Palfrader, Peter
  last_name: Palfrader
citation:
  ama: 'Biedl T, Huber S, Palfrader P. Planar matchings for weighted straight skeletons.
    In: <i>25th International Symposium, ISAAC 2014</i>. Vol 8889. Springer Nature;
    2014:117-127. doi:<a href="https://doi.org/10.1007/978-3-319-13075-0_10">10.1007/978-3-319-13075-0_10</a>'
  apa: 'Biedl, T., Huber, S., &#38; Palfrader, P. (2014). Planar matchings for weighted
    straight skeletons. In <i>25th International Symposium, ISAAC 2014</i> (Vol. 8889,
    pp. 117–127). Jeonju, Korea: Springer Nature. <a href="https://doi.org/10.1007/978-3-319-13075-0_10">https://doi.org/10.1007/978-3-319-13075-0_10</a>'
  chicago: Biedl, Therese, Stefan Huber, and Peter Palfrader. “Planar Matchings for
    Weighted Straight Skeletons.” In <i>25th International Symposium, ISAAC 2014</i>,
    8889:117–27. Springer Nature, 2014. <a href="https://doi.org/10.1007/978-3-319-13075-0_10">https://doi.org/10.1007/978-3-319-13075-0_10</a>.
  ieee: T. Biedl, S. Huber, and P. Palfrader, “Planar matchings for weighted straight
    skeletons,” in <i>25th International Symposium, ISAAC 2014</i>, Jeonju, Korea,
    2014, vol. 8889, pp. 117–127.
  ista: 'Biedl T, Huber S, Palfrader P. 2014. Planar matchings for weighted straight
    skeletons. 25th International Symposium, ISAAC 2014. ISAAC: International Symposium
    on Algorithms and Computation, LNCS, vol. 8889, 117–127.'
  mla: Biedl, Therese, et al. “Planar Matchings for Weighted Straight Skeletons.”
    <i>25th International Symposium, ISAAC 2014</i>, vol. 8889, Springer Nature, 2014,
    pp. 117–27, doi:<a href="https://doi.org/10.1007/978-3-319-13075-0_10">10.1007/978-3-319-13075-0_10</a>.
  short: T. Biedl, S. Huber, P. Palfrader, in:, 25th International Symposium, ISAAC
    2014, Springer Nature, 2014, pp. 117–127.
conference:
  end_date: 2014-12-17
  location: Jeonju, Korea
  name: 'ISAAC: International Symposium on Algorithms and Computation'
  start_date: 2014-12-15
date_created: 2022-03-21T07:09:03Z
date_published: 2014-11-08T00:00:00Z
date_updated: 2023-02-23T12:20:55Z
day: '08'
department:
- _id: HeEd
doi: 10.1007/978-3-319-13075-0_10
intvolume: '      8889'
language:
- iso: eng
month: '11'
oa_version: None
page: 117-127
publication: 25th International Symposium, ISAAC 2014
publication_identifier:
  eisbn:
  - '9783319130750'
  eissn:
  - 1611-3349
  isbn:
  - '9783319130743'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '481'
    relation: later_version
    status: public
scopus_import: '1'
status: public
title: Planar matchings for weighted straight skeletons
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 8889
year: '2014'
...
---
_id: '10893'
abstract:
- lang: eng
  text: Saddle periodic orbits are an essential and stable part of the topological
    skeleton of a 3D vector field. Nevertheless, there is currently no efficient algorithm
    to robustly extract these features. In this chapter, we present a novel technique
    to extract saddle periodic orbits. Exploiting the analytic properties of such
    an orbit, we propose a scalar measure based on the finite-time Lyapunov exponent
    (FTLE) that indicates its presence. Using persistent homology, we can then extract
    the robust cycles of this field. These cycles thereby represent the saddle periodic
    orbits of the given vector field. We discuss the different existing FTLE approximation
    schemes regarding their applicability to this specific problem and propose an
    adapted version of FTLE called Normalized Velocity Separation. Finally, we evaluate
    our method using simple analytic vector field data.
acknowledgement: First, we thank the reviewers of this paper for their ideas and critical
  comments. In addition, we thank Ronny Peikert and Filip Sadlo for a fruitful discussions.
  This research is supported by the European Commission under the TOPOSYS project
  FP7-ICT-318493-STREP, the European Social Fund (ESF App. No. 100098251), and the
  European Science Foundation under the ACAT Research Network Program.
article_processing_charge: No
author:
- first_name: Jens
  full_name: Kasten, Jens
  last_name: Kasten
- first_name: Jan
  full_name: Reininghaus, Jan
  id: 4505473A-F248-11E8-B48F-1D18A9856A87
  last_name: Reininghaus
- first_name: Wieland
  full_name: Reich, Wieland
  last_name: Reich
- first_name: Gerik
  full_name: Scheuermann, Gerik
  last_name: Scheuermann
citation:
  ama: 'Kasten J, Reininghaus J, Reich W, Scheuermann G. Toward the extraction of
    saddle periodic orbits. In: Bremer P-T, Hotz I, Pascucci V, Peikert R, eds. <i>Topological
    Methods in Data Analysis and Visualization III </i>. Vol 1. Mathematics and Visualization.
    Cham: Springer; 2014:55-69. doi:<a href="https://doi.org/10.1007/978-3-319-04099-8_4">10.1007/978-3-319-04099-8_4</a>'
  apa: 'Kasten, J., Reininghaus, J., Reich, W., &#38; Scheuermann, G. (2014). Toward
    the extraction of saddle periodic orbits. In P.-T. Bremer, I. Hotz, V. Pascucci,
    &#38; R. Peikert (Eds.), <i>Topological Methods in Data Analysis and Visualization
    III </i> (Vol. 1, pp. 55–69). Cham: Springer. <a href="https://doi.org/10.1007/978-3-319-04099-8_4">https://doi.org/10.1007/978-3-319-04099-8_4</a>'
  chicago: 'Kasten, Jens, Jan Reininghaus, Wieland Reich, and Gerik Scheuermann. “Toward
    the Extraction of Saddle Periodic Orbits.” In <i>Topological Methods in Data Analysis
    and Visualization III </i>, edited by Peer-Timo Bremer, Ingrid Hotz, Valerio Pascucci,
    and Ronald Peikert, 1:55–69. Mathematics and Visualization. Cham: Springer, 2014.
    <a href="https://doi.org/10.1007/978-3-319-04099-8_4">https://doi.org/10.1007/978-3-319-04099-8_4</a>.'
  ieee: 'J. Kasten, J. Reininghaus, W. Reich, and G. Scheuermann, “Toward the extraction
    of saddle periodic orbits,” in <i>Topological Methods in Data Analysis and Visualization
    III </i>, vol. 1, P.-T. Bremer, I. Hotz, V. Pascucci, and R. Peikert, Eds. Cham:
    Springer, 2014, pp. 55–69.'
  ista: 'Kasten J, Reininghaus J, Reich W, Scheuermann G. 2014.Toward the extraction
    of saddle periodic orbits. In: Topological Methods in Data Analysis and Visualization
    III . vol. 1, 55–69.'
  mla: Kasten, Jens, et al. “Toward the Extraction of Saddle Periodic Orbits.” <i>Topological
    Methods in Data Analysis and Visualization III </i>, edited by Peer-Timo Bremer
    et al., vol. 1, Springer, 2014, pp. 55–69, doi:<a href="https://doi.org/10.1007/978-3-319-04099-8_4">10.1007/978-3-319-04099-8_4</a>.
  short: J. Kasten, J. Reininghaus, W. Reich, G. Scheuermann, in:, P.-T. Bremer, I.
    Hotz, V. Pascucci, R. Peikert (Eds.), Topological Methods in Data Analysis and
    Visualization III , Springer, Cham, 2014, pp. 55–69.
date_created: 2022-03-21T07:11:23Z
date_published: 2014-03-19T00:00:00Z
date_updated: 2022-06-21T12:01:47Z
day: '19'
department:
- _id: HeEd
doi: 10.1007/978-3-319-04099-8_4
ec_funded: 1
editor:
- first_name: Peer-Timo
  full_name: Bremer, Peer-Timo
  last_name: Bremer
- first_name: Ingrid
  full_name: Hotz, Ingrid
  last_name: Hotz
- first_name: Valerio
  full_name: Pascucci, Valerio
  last_name: Pascucci
- first_name: Ronald
  full_name: Peikert, Ronald
  last_name: Peikert
intvolume: '         1'
language:
- iso: eng
month: '03'
oa_version: None
page: 55-69
place: Cham
project:
- _id: 255D761E-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '318493'
  name: Topological Complex Systems
publication: 'Topological Methods in Data Analysis and Visualization III '
publication_identifier:
  eisbn:
  - '9783319040998'
  eissn:
  - 2197-666X
  isbn:
  - '9783319040981'
  issn:
  - 1612-3786
publication_status: published
publisher: Springer
quality_controlled: '1'
scopus_import: '1'
series_title: Mathematics and Visualization
status: public
title: Toward the extraction of saddle periodic orbits
type: book_chapter
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 1
year: '2014'
...
---
_id: '10894'
abstract:
- lang: eng
  text: PHAT is a C++ library for the computation of persistent homology by matrix
    reduction. We aim for a simple generic design that decouples algorithms from data
    structures without sacrificing efficiency or user-friendliness. This makes PHAT
    a versatile platform for experimenting with algorithmic ideas and comparing them
    to state of the art implementations.
article_processing_charge: No
author:
- first_name: Ulrich
  full_name: Bauer, Ulrich
  id: 2ADD483A-F248-11E8-B48F-1D18A9856A87
  last_name: Bauer
  orcid: 0000-0002-9683-0724
- first_name: Michael
  full_name: Kerber, Michael
  last_name: Kerber
- first_name: Jan
  full_name: Reininghaus, Jan
  id: 4505473A-F248-11E8-B48F-1D18A9856A87
  last_name: Reininghaus
- first_name: Hubert
  full_name: Wagner, Hubert
  last_name: Wagner
citation:
  ama: 'Bauer U, Kerber M, Reininghaus J, Wagner H. PHAT – Persistent Homology Algorithms
    Toolbox. In: <i>ICMS 2014: International Congress on Mathematical Software</i>.
    Vol 8592. LNCS. Berlin, Heidelberg: Springer Berlin Heidelberg; 2014:137-143.
    doi:<a href="https://doi.org/10.1007/978-3-662-44199-2_24">10.1007/978-3-662-44199-2_24</a>'
  apa: 'Bauer, U., Kerber, M., Reininghaus, J., &#38; Wagner, H. (2014). PHAT – Persistent
    Homology Algorithms Toolbox. In <i>ICMS 2014: International Congress on Mathematical
    Software</i> (Vol. 8592, pp. 137–143). Berlin, Heidelberg: Springer Berlin Heidelberg.
    <a href="https://doi.org/10.1007/978-3-662-44199-2_24">https://doi.org/10.1007/978-3-662-44199-2_24</a>'
  chicago: 'Bauer, Ulrich, Michael Kerber, Jan Reininghaus, and Hubert Wagner. “PHAT
    – Persistent Homology Algorithms Toolbox.” In <i>ICMS 2014: International Congress
    on Mathematical Software</i>, 8592:137–43. LNCS. Berlin, Heidelberg: Springer
    Berlin Heidelberg, 2014. <a href="https://doi.org/10.1007/978-3-662-44199-2_24">https://doi.org/10.1007/978-3-662-44199-2_24</a>.'
  ieee: 'U. Bauer, M. Kerber, J. Reininghaus, and H. Wagner, “PHAT – Persistent Homology
    Algorithms Toolbox,” in <i>ICMS 2014: International Congress on Mathematical Software</i>,
    Seoul, South Korea, 2014, vol. 8592, pp. 137–143.'
  ista: 'Bauer U, Kerber M, Reininghaus J, Wagner H. 2014. PHAT – Persistent Homology
    Algorithms Toolbox. ICMS 2014: International Congress on Mathematical Software.
    ICMS: International Congress on Mathematical SoftwareLNCS vol. 8592, 137–143.'
  mla: 'Bauer, Ulrich, et al. “PHAT – Persistent Homology Algorithms Toolbox.” <i>ICMS
    2014: International Congress on Mathematical Software</i>, vol. 8592, Springer
    Berlin Heidelberg, 2014, pp. 137–43, doi:<a href="https://doi.org/10.1007/978-3-662-44199-2_24">10.1007/978-3-662-44199-2_24</a>.'
  short: 'U. Bauer, M. Kerber, J. Reininghaus, H. Wagner, in:, ICMS 2014: International
    Congress on Mathematical Software, Springer Berlin Heidelberg, Berlin, Heidelberg,
    2014, pp. 137–143.'
conference:
  end_date: 2014-08-09
  location: Seoul, South Korea
  name: 'ICMS: International Congress on Mathematical Software'
  start_date: 2014-08-05
date_created: 2022-03-21T07:12:16Z
date_published: 2014-09-01T00:00:00Z
date_updated: 2023-09-20T09:42:40Z
day: '01'
department:
- _id: HeEd
doi: 10.1007/978-3-662-44199-2_24
intvolume: '      8592'
language:
- iso: eng
month: '09'
oa_version: None
page: 137-143
place: Berlin, Heidelberg
publication: 'ICMS 2014: International Congress on Mathematical Software'
publication_identifier:
  eisbn:
  - '9783662441992'
  eissn:
  - 1611-3349
  isbn:
  - '9783662441985'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Berlin Heidelberg
quality_controlled: '1'
related_material:
  record:
  - id: '1433'
    relation: later_version
    status: public
scopus_import: '1'
series_title: LNCS
status: public
title: PHAT – Persistent Homology Algorithms Toolbox
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 8592
year: '2014'
...
---
_id: '1816'
abstract:
- lang: eng
  text: Watermarking techniques for vector graphics dislocate vertices in order to
    embed imperceptible, yet detectable, statistical features into the input data.
    The embedding process may result in a change of the topology of the input data,
    e.g., by introducing self-intersections, which is undesirable or even disastrous
    for many applications. In this paper we present a watermarking framework for two-dimensional
    vector graphics that employs conventional watermarking techniques but still provides
    the guarantee that the topology of the input data is preserved. The geometric
    part of this framework computes so-called maximum perturbation regions (MPR) of
    vertices. We propose two efficient algorithms to compute MPRs based on Voronoi
    diagrams and constrained triangulations. Furthermore, we present two algorithms
    to conditionally correct the watermarked data in order to increase the watermark
    embedding capacity and still guarantee topological correctness. While we focus
    on the watermarking of input formed by straight-line segments, one of our approaches
    can also be extended to circular arcs. We conclude the paper by demonstrating
    and analyzing the applicability of our framework in conjunction with two well-known
    watermarking techniques.
acknowledgement: 'Work by Martin Held and Stefan Huber was supported by Austrian Science
  Fund (FWF): L367-N15 and P25816-N15.'
author:
- first_name: Stefan
  full_name: Huber, Stefan
  id: 4700A070-F248-11E8-B48F-1D18A9856A87
  last_name: Huber
  orcid: 0000-0002-8871-5814
- first_name: Martin
  full_name: Held, Martin
  last_name: Held
- first_name: Peter
  full_name: Meerwald, Peter
  last_name: Meerwald
- first_name: Roland
  full_name: Kwitt, Roland
  last_name: Kwitt
citation:
  ama: Huber S, Held M, Meerwald P, Kwitt R. Topology-preserving watermarking of vector
    graphics. <i>International Journal of Computational Geometry and Applications</i>.
    2014;24(1):61-86. doi:<a href="https://doi.org/10.1142/S0218195914500034">10.1142/S0218195914500034</a>
  apa: Huber, S., Held, M., Meerwald, P., &#38; Kwitt, R. (2014). Topology-preserving
    watermarking of vector graphics. <i>International Journal of Computational Geometry
    and Applications</i>. World Scientific Publishing. <a href="https://doi.org/10.1142/S0218195914500034">https://doi.org/10.1142/S0218195914500034</a>
  chicago: Huber, Stefan, Martin Held, Peter Meerwald, and Roland Kwitt. “Topology-Preserving
    Watermarking of Vector Graphics.” <i>International Journal of Computational Geometry
    and Applications</i>. World Scientific Publishing, 2014. <a href="https://doi.org/10.1142/S0218195914500034">https://doi.org/10.1142/S0218195914500034</a>.
  ieee: S. Huber, M. Held, P. Meerwald, and R. Kwitt, “Topology-preserving watermarking
    of vector graphics,” <i>International Journal of Computational Geometry and Applications</i>,
    vol. 24, no. 1. World Scientific Publishing, pp. 61–86, 2014.
  ista: Huber S, Held M, Meerwald P, Kwitt R. 2014. Topology-preserving watermarking
    of vector graphics. International Journal of Computational Geometry and Applications.
    24(1), 61–86.
  mla: Huber, Stefan, et al. “Topology-Preserving Watermarking of Vector Graphics.”
    <i>International Journal of Computational Geometry and Applications</i>, vol.
    24, no. 1, World Scientific Publishing, 2014, pp. 61–86, doi:<a href="https://doi.org/10.1142/S0218195914500034">10.1142/S0218195914500034</a>.
  short: S. Huber, M. Held, P. Meerwald, R. Kwitt, International Journal of Computational
    Geometry and Applications 24 (2014) 61–86.
date_created: 2018-12-11T11:54:10Z
date_published: 2014-03-16T00:00:00Z
date_updated: 2021-01-12T06:53:23Z
day: '16'
ddc:
- '000'
department:
- _id: HeEd
doi: 10.1142/S0218195914500034
file:
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  date_created: 2018-12-12T10:08:43Z
  date_updated: 2020-07-14T12:45:17Z
  file_id: '4704'
  file_name: IST-2016-443-v1+1_S0218195914500034.pdf
  file_size: 991734
  relation: main_file
file_date_updated: 2020-07-14T12:45:17Z
has_accepted_license: '1'
intvolume: '        24'
issue: '1'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 61 - 86
publication: International Journal of Computational Geometry and Applications
publication_status: published
publisher: World Scientific Publishing
publist_id: '5290'
pubrep_id: '443'
quality_controlled: '1'
scopus_import: 1
status: public
title: Topology-preserving watermarking of vector graphics
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: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 24
year: '2014'
...
---
_id: '1842'
abstract:
- lang: eng
  text: We prove polynomial upper bounds of geometric Ramsey numbers of pathwidth-2
    outerplanar triangulations in both convex and general cases. We also prove that
    the geometric Ramsey numbers of the ladder graph on 2n vertices are bounded by
    O(n3) and O(n10), in the convex and general case, respectively. We then apply
    similar methods to prove an (Formula presented.) upper bound on the Ramsey number
    of a path with n ordered vertices.
acknowledgement: Marek Krčál was supported by the ERC Advanced Grant No. 267165.
author:
- first_name: Josef
  full_name: Cibulka, Josef
  last_name: Cibulka
- first_name: Pu
  full_name: Gao, Pu
  last_name: Gao
- first_name: Marek
  full_name: Krcál, Marek
  id: 33E21118-F248-11E8-B48F-1D18A9856A87
  last_name: Krcál
- first_name: Tomáš
  full_name: Valla, Tomáš
  last_name: Valla
- first_name: Pavel
  full_name: Valtr, Pavel
  last_name: Valtr
citation:
  ama: Cibulka J, Gao P, Krcál M, Valla T, Valtr P. On the geometric ramsey number
    of outerplanar graphs. <i>Discrete &#38; Computational Geometry</i>. 2014;53(1):64-79.
    doi:<a href="https://doi.org/10.1007/s00454-014-9646-x">10.1007/s00454-014-9646-x</a>
  apa: Cibulka, J., Gao, P., Krcál, M., Valla, T., &#38; Valtr, P. (2014). On the
    geometric ramsey number of outerplanar graphs. <i>Discrete &#38; Computational
    Geometry</i>. Springer. <a href="https://doi.org/10.1007/s00454-014-9646-x">https://doi.org/10.1007/s00454-014-9646-x</a>
  chicago: Cibulka, Josef, Pu Gao, Marek Krcál, Tomáš Valla, and Pavel Valtr. “On
    the Geometric Ramsey Number of Outerplanar Graphs.” <i>Discrete &#38; Computational
    Geometry</i>. Springer, 2014. <a href="https://doi.org/10.1007/s00454-014-9646-x">https://doi.org/10.1007/s00454-014-9646-x</a>.
  ieee: J. Cibulka, P. Gao, M. Krcál, T. Valla, and P. Valtr, “On the geometric ramsey
    number of outerplanar graphs,” <i>Discrete &#38; Computational Geometry</i>, vol.
    53, no. 1. Springer, pp. 64–79, 2014.
  ista: Cibulka J, Gao P, Krcál M, Valla T, Valtr P. 2014. On the geometric ramsey
    number of outerplanar graphs. Discrete &#38; Computational Geometry. 53(1), 64–79.
  mla: Cibulka, Josef, et al. “On the Geometric Ramsey Number of Outerplanar Graphs.”
    <i>Discrete &#38; Computational Geometry</i>, vol. 53, no. 1, Springer, 2014,
    pp. 64–79, doi:<a href="https://doi.org/10.1007/s00454-014-9646-x">10.1007/s00454-014-9646-x</a>.
  short: J. Cibulka, P. Gao, M. Krcál, T. Valla, P. Valtr, Discrete &#38; Computational
    Geometry 53 (2014) 64–79.
date_created: 2018-12-11T11:54:18Z
date_published: 2014-11-14T00:00:00Z
date_updated: 2021-01-12T06:53:33Z
day: '14'
department:
- _id: UlWa
- _id: HeEd
doi: 10.1007/s00454-014-9646-x
intvolume: '        53'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1310.7004
month: '11'
oa: 1
oa_version: Submitted Version
page: 64 - 79
publication: Discrete & Computational Geometry
publication_status: published
publisher: Springer
publist_id: '5260'
scopus_import: 1
status: public
title: On the geometric ramsey number of outerplanar graphs
type: journal_article
user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87
volume: 53
year: '2014'
...
---
_id: '1876'
abstract:
- lang: eng
  text: We study densities of functionals over uniformly bounded triangulations of
    a Delaunay set of vertices, and prove that the minimum is attained for the Delaunay
    triangulation if this is the case for finite sets.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Nikolai
  full_name: Dolbilin, Nikolai
  last_name: Dolbilin
- 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: Glazyrin, Alexey
  last_name: Glazyrin
- first_name: Oleg
  full_name: Musin, Oleg
  last_name: Musin
citation:
  ama: Dolbilin N, Edelsbrunner H, Glazyrin A, Musin O. Functionals on triangulations
    of delaunay sets. <i>Moscow Mathematical Journal</i>. 2014;14(3):491-504. doi:<a
    href="https://doi.org/10.17323/1609-4514-2014-14-3-491-504">10.17323/1609-4514-2014-14-3-491-504</a>
  apa: Dolbilin, N., Edelsbrunner, H., Glazyrin, A., &#38; Musin, O. (2014). Functionals
    on triangulations of delaunay sets. <i>Moscow Mathematical Journal</i>. Independent
    University of Moscow. <a href="https://doi.org/10.17323/1609-4514-2014-14-3-491-504">https://doi.org/10.17323/1609-4514-2014-14-3-491-504</a>
  chicago: Dolbilin, Nikolai, Herbert Edelsbrunner, Alexey Glazyrin, and Oleg Musin.
    “Functionals on Triangulations of Delaunay Sets.” <i>Moscow Mathematical Journal</i>.
    Independent University of Moscow, 2014. <a href="https://doi.org/10.17323/1609-4514-2014-14-3-491-504">https://doi.org/10.17323/1609-4514-2014-14-3-491-504</a>.
  ieee: N. Dolbilin, H. Edelsbrunner, A. Glazyrin, and O. Musin, “Functionals on triangulations
    of delaunay sets,” <i>Moscow Mathematical Journal</i>, vol. 14, no. 3. Independent
    University of Moscow, pp. 491–504, 2014.
  ista: Dolbilin N, Edelsbrunner H, Glazyrin A, Musin O. 2014. Functionals on triangulations
    of delaunay sets. Moscow Mathematical Journal. 14(3), 491–504.
  mla: Dolbilin, Nikolai, et al. “Functionals on Triangulations of Delaunay Sets.”
    <i>Moscow Mathematical Journal</i>, vol. 14, no. 3, Independent University of
    Moscow, 2014, pp. 491–504, doi:<a href="https://doi.org/10.17323/1609-4514-2014-14-3-491-504">10.17323/1609-4514-2014-14-3-491-504</a>.
  short: N. Dolbilin, H. Edelsbrunner, A. Glazyrin, O. Musin, Moscow Mathematical
    Journal 14 (2014) 491–504.
date_created: 2018-12-11T11:54:29Z
date_published: 2014-07-01T00:00:00Z
date_updated: 2022-03-03T11:47:09Z
day: '01'
department:
- _id: HeEd
doi: 10.17323/1609-4514-2014-14-3-491-504
external_id:
  arxiv:
  - '1211.7053'
intvolume: '        14'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://arxiv.org/abs/1211.7053
month: '07'
oa: 1
oa_version: Submitted Version
page: 491 - 504
publication: Moscow Mathematical Journal
publication_identifier:
  issn:
  - '16093321'
publication_status: published
publisher: Independent University of Moscow
publist_id: '5220'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Functionals on triangulations of delaunay sets
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 14
year: '2014'
...
