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We study random elements of subgroups (and cosets) of the mapping class group of a closed hyperbolic surface, in part through the properties of their mapping tori. In particular, we study the distribution of the homology of the mapping…

Geometric Topology · Mathematics 2014-04-30 Igor Rivin

We study elastic manifolds with self-repelling terms and estimate their effective radius. This class of manifolds is modelled by a self-repelling vector-valued Gaussian free field with Neumann boundary conditions over the domain…

Probability · Mathematics 2023-04-04 Carl Mueller , Eyal Neuman

We will provide bounds on both the Betti numbers and the torsion part of the homology of hyperbolic orbifolds. These bounds are linear in the volume and are a direct consequence of an efficient simplicial model of the thick part, which we…

Geometric Topology · Mathematics 2021-01-01 Hartwig Senska

In this paper, we show the existence of smoothly embedded closed minimal surfaces in infinite volume hyperbolic $3$-manifolds except some special cases.

Differential Geometry · Mathematics 2021-05-12 Baris Coskunuzer

How good is a triangulation as an approximation of a smooth curved surface or manifold? We provide bounds on the {\em interpolation error}, the error in the position of the surface, and the {\em normal error}, the error in the normal…

Computational Geometry · Computer Science 2019-11-11 Marc Khoury , Jonathan Richard Shewchuk

Answering a question of Ben Yaacov, Ibarluc\'ia, and Tsankov [5], we show an explicit way to construct an affine formula for the distance between two $n$-tuples in a $\{0,1\}$-valued $\varnothing$-structure, using $\lceil \log_2 n \rceil$…

Logic · Mathematics 2026-03-10 Arthur Molina-Mounier

We survey work on the topology of the space AH(M) of all (marked) hyperbolic 3-manifolds homotopy equivalent to a fixed compact 3-manifold M with boundary. The interior of AH(M) is quite well-understood, but the topology of the entire space…

Geometric Topology · Mathematics 2010-01-14 Richard D. Canary

Our aim in this paper is to establish stable manifolds near hyperbolic equilibria of fractional differential equations in arbitrary finite dimensional spaces.

Dynamical Systems · Mathematics 2016-03-18 Nguyen Dinh Cong , Doan Thai Son , Stefan Siegmund , Hoang The Tuan

In this paper, we prove an equality which involves Reidemeister torsion, complex volume, and Zograf infinite product for closed hyperbolic 3-manifolds.

Differential Geometry · Mathematics 2016-12-21 Jinsung Park

We bound two global invariants of cusped hyperbolic manifolds: the length of the shortest closed geodesic (the systole), and the radius of the biggest embedded ball (the inradius). We give an upper bound for the systole, expressed in terms…

Geometric Topology · Mathematics 2015-08-12 Matthieu Gendulphe

Very recently, the Fridman function of a complex manifold $X$ has been identified as a dual of the squeezing function of $X$. In this paper, we prove that the Fridman function for certain hyperbolic complex manifold $X$ is bounded above by…

Complex Variables · Mathematics 2021-02-18 Tuen-Wai Ng , Chiu Chak Tang , Jonathan Tsai

Let $M_0$ be a compact and orientable 3-manifold. After capping off spherical boundaries with balls and removing any torus boundaries, we prove that the resulting manifold $M$ contains handlebodies of arbitrary genus such that the closure…

Geometric Topology · Mathematics 2025-02-03 Colin Adams , Francisco Gomez-Paz , Jiachen Kang , Lukas Krause , Gregory Li , Chloe Marple , Ziwei Tan

For three dimensional complete Riemannian manifolds with scalar curvature no less than one, we obtain the sharp upper bound of complete stable minimal surfaces' diameter.

Differential Geometry · Mathematics 2025-05-27 Qixuan Hu , Guoyi Xu , Shuai Zhang

We investigate the geometry of $\pi_1$-injective surfaces in closed hyperbolic 3-manifolds. First we prove that for any $e>0$, if the manifold $M$ has sufficiently large systole $\sys_1(M)$, the genus of any such surface in $M$ is bounded…

Geometric Topology · Mathematics 2012-07-10 Mikhail Belolipetsky

In this paper we obtain estimates on the distance of inertial manifolds for dynamical systems generated by evolutionary parabolic type equations. We consider the situation where the systems are defined in different phase spaces and we…

Analysis of PDEs · Mathematics 2015-02-17 José M. Arrieta , Esperanza Santamaría

If a hyperbolic 3-manifold M admits a reducible and a finite Dehn filling, the distance between the filling slopes is known to be 1. This has been proved recently by Boyer, Gordon and Zhang. The first example of a manifold with two such…

Geometric Topology · Mathematics 2009-10-14 Sungmo Kang

We show that for a closed hyperbolic 3-manifold the size of the first eigenvalue of the Hodge Laplacian acting on coexact 1-forms is comparable to an isoperimetric ratio relating geodesic length and stable commutator length with comparison…

Geometric Topology · Mathematics 2022-05-06 Cameron Gates Rudd

We prove in a direct, geometric way that for any compatible Riemannian metric on a Lie manifold the injectivity radius is positive

Differential Geometry · Mathematics 2018-03-30 Paolo Antonini , Guido De Philippis , Nicola Gigli

This paper proves explicit bilipschitz bounds on the change in metric between the thick part of a cusped hyperbolic 3-manifold N and the thick part of any of its long Dehn fillings. Given a bilipschitz constant J > 1 and a thickness…

Geometric Topology · Mathematics 2022-08-17 David Futer , Jessica S. Purcell , Saul Schleimer

In this note, we prove that for a complete noncompact three dimensional Riemannian manifold with bounded sectional curvature, if it has uniformly positive scalar curvature, then there is a uniform lower bound on the injectivity radius.

Differential Geometry · Mathematics 2023-02-24 Conghan Dong