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We prove that the space of free boundary CMC surfaces of bounded topology, bounded area and bounded boundary length is compact in the $C^k$ graphical sense away from a finite set of points. This is a CMC version of a result for minimal…

Differential Geometry · Mathematics 2025-04-23 Nicolau S. Aiex , Han Hong

Frequent interactions between individuals are a fundamental challenge for pose estimation algorithms. Current pipelines either use an object detector together with a pose estimator (top-down approach), or localize all body parts first and…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Mu Zhou , Lucas Stoffl , Mackenzie Weygandt Mathis , Alexander Mathis

This paper grew out of an attempt to find a suitable finite sheeted covering of an aspherical 3-manifold so that the cover either has infinite or trivial first homology group. With this motivation we define a new class of groups. These…

Geometric Topology · Mathematics 2007-05-23 S. K. Roushon

This is a paper in Analytic Topology.

Differential Geometry · Mathematics 2007-05-23 Alexander Reznikov

This paper has been withdrawn by the author. The content of the previous versions is now covered by the more recent papers - math.DG/0610252 (concerning the Lie group structuren on the gauge groups) - math.DG/0612522 (concerning the weak…

Mathematical Physics · Physics 2009-09-29 Christoph Wockel

We establish Monod's isomorphism conjecture in degree-three bounded cohomology for every complex simple Lie group of classical type. Our main ingredient is a bounded-cohomological stability theorem with an optimal range in degree three that…

Group Theory · Mathematics 2023-10-10 Carlos De la Cruz Mengual

We use a new idea that emerged in the examination of exposed positive maps between matrix algebras to investigate in more detail the difference between positive maps on $M_2(C)$ and $M_3(C)$. Our main tool stems from classical Grothendieck…

Mathematical Physics · Physics 2016-04-08 Wladyslaw A. Majewski , Tomasz I. Tylec

See hep-th/9903228.

High Energy Physics - Theory · Physics 2007-05-23 Joseph Polchinski , Leonard Susskind

Topological photonics has attracted increasing attention in recent years due to the unique opportunities it provides to manipulate light in a robust way immune to disorder and defects. Up to now, diverse photonic platforms, rich physical…

Optics · Physics 2022-09-20 Zhihao Lan , Menglin L. N. Chen , Fei Gao , Shuang Zhang , Wei E. I. Sha

We present an approach to inform the reconstruction of a surface from a point scan through topological priors. The reconstruction is based on basis functions which are optimized to provide a good fit to the point scan while satisfying…

Computational Geometry · Computer Science 2021-09-17 Rickard Brüel-Gabrielsson , Vignesh Ganapathi-Subramanian , Primoz Skraba , Leonidas J. Guibas

We propose a model-based, automated, bottom-up approach for design, which is applicable to various physical domains, but in this work we focus on the electrical domain. This bottom-up approach is based on a meta-topology in which each link…

Optimization and Control · Mathematics 2023-02-17 Ion Matei , Maksym Zhenirovskyy , John Maxwell , Johan de Kleer

This is a survey of topological properties of open, complete nonpositively curved manifolds which may have infinite volume. Topics include topology of ends, restrictions on the fundamental group, as well as a review of known examples.

Differential Geometry · Mathematics 2014-08-05 Igor Belegradek

We construct algorithms and topological invariants that allow us to distinguish the topological type of a surface, as well as functions and vector fields for their topological equivalence. In the first part (arXiv:2501.15657), we discused…

Geometric Topology · Mathematics 2025-02-17 Alexandr Prishlyak

A problem from Democritus is used to illustrate the building, and use, of infinitesimal covectors from its regularized, finite, counterpart.

History and Overview · Mathematics 2007-05-23 A. Rivero

We investigate slices of the Sierpi\'nski tetrahedron from a topological viewpoint. For each $c\in[0,1]$, we study the \v{C}ech (co)homology group of the slice at height $c$. We show that the topology of the slice exhibits a sharp…

Dynamical Systems · Mathematics 2026-03-09 Yuto Nakajima , Takayuki Watanabe

We survey various attempts to transport the ultraproduct construction from the realm of model theory to that of general topology.

Logic · Mathematics 2016-09-07 Paul Bankston

We study some topological properties of attractors.

Dynamical Systems · Mathematics 2013-04-12 R. N. Ganikhodzhaev , A. T. Pirnapasov

This work is concerned with a representation of shapes that disentangles fine, local and possibly repeating geometry, from global, coarse structures. Achieving such disentanglement leads to two unrelated advantages: i) a significant…

Computer Vision and Pattern Recognition · Computer Science 2022-04-06 Luca Morreale , Noam Aigerman , Paul Guerrero , Vladimir G. Kim , Niloy J. Mitra

In this work, we study the perception problem for sampled surfaces (possibly with boundary) using tools from computational topology, specifically, how to identify their underlying topology starting from point-cloud samples in space, such as…

Computational Geometry · Computer Science 2024-10-17 Franco Coltraro , Jaume Amorós , Maria Alberich-Carramiñana , Carme Torras

We analyse the topological (knot-theoretic) features of a certain codimension-one bifurcation of a partially hyperbolic fixed point in a flow on $\real^3$ originally described by Shil'nikov. By modifying how the invariant manifolds wrap…

Dynamical Systems · Mathematics 2016-09-07 Robert Ghrist , Todd Young