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Milnor computed the volumes of ideal hyperbolic prisms as part of an effort to construct 3-manifolds whose volumes are finite rational sums of the Lobachevsky function evaluated at rational multiples of pi. Motivated by these results and…

Geometric Topology · Mathematics 2026-02-27 Eric Chesebro , Justin Lanier , Emma N. McQuire , James Morgan , Jessica S. Purcell , Henry Segerman

We obtain strong upper bounds for the Betti numbers of compact complex-hyperbolic manifolds. We use the unitary holonomy to improve the results given by the most direct application of the techniques of [DS17]. We also provide effective…

Differential Geometry · Mathematics 2025-05-15 Luca F. Di Cerbo , Mark Stern

For a closed, strictly convex projective manifold of dimension $n\geq 3$ that admits a hyperbolic structure, we show that the ratio of Hilbert volume to hyperbolic volume is bounded below by a constant that depends only on dimension. We…

Differential Geometry · Mathematics 2017-08-17 Ilesanmi Adeboye , Harrison Bray , David Constantine

We consider the projectivization of Minkowski space with the analytic continuation of the hyperbolic metric and call this an extended hyperbolic space. We can measure the volume of a domain lying across the boundary of the hyperbolic space…

Metric Geometry · Mathematics 2007-05-23 Yunhi Cho , Hyuk Kim

If a closed, orientable hyperbolic 3--manifold M has volume at most 1.22 then H_1(M;Z_p) has dimension at most 2 for every prime p not 2 or 7, and H_1(M;Z_2) and H_1(M;Z_7) have dimension at most 3. The proof combines several deep results…

Geometric Topology · Mathematics 2009-07-06 Ian Agol , Marc Culler , Peter B Shalen

We prove there exists a compact embedded minimal surface in a complete finite volume hyperbolic $3$-manifold $\mathcal{N}$. We also obtain a least area, incompressible, properly embedded, finite topology, $2$-sided surface. We prove a…

Differential Geometry · Mathematics 2014-06-26 Pascal Collin , Laurent Hauswirth , Laurent Mazet , Harold Rosenberg

We extend the Neumann's methods and give the explicit formulae for the volume and the Chern-Simons invariant for hyperbolic alternating knot orbifolds.

Geometric Topology · Mathematics 2018-03-06 Ji-Young Ham , Joongul Lee

Integral foliated simplicial volume is a version of simplicial volume combining the rigidity of integral coefficients with the flexibility of measure spaces. In this article, using the language of measure equivalence of groups we prove a…

Geometric Topology · Mathematics 2014-03-24 Clara Loeh , Cristina Pagliantini

We obtain sharp volume bounds on the boundaries of Alexandrov spaces with given lower curvature bound, dimension, and radius. We also completely classify the rigidity case and analyze almost rigidity. Our results are new even for smooth…

Differential Geometry · Mathematics 2023-08-29 Qin Deng , Vitali Kapovitch

We consider variational problems with regular H{\"o}lderian weight or boundary singularity, and Dirichlet condition. We prove the boundedness of the volume of the solutions to these equations on analytic domains.

Analysis of PDEs · Mathematics 2023-08-02 Samy Skander Bahoura

We define a relative version of the Turaev-Viro invariants for an ideally triangulated compact 3-manifold with non-empty boundary and a coloring on the edges, generalizing the Turaev-Viro invariants [35] of the manifold. We also propose the…

Geometric Topology · Mathematics 2023-04-25 Tian Yang

We show that for a representation of the fundamental group of a triangulated closed 3-manifold (not necessarily hyperbolic) into $\PSL$ so that any edge loop has non-trivial image under the representation, there exist uncountably many…

Geometric Topology · Mathematics 2010-04-23 Tian Yang

A periodic geodesic on a surface has a natural lift to the unit tangent bundle; when the complement of this lift is hyperbolic, its volume typically grows as the geodesic gets longer. We give an upper bound for this volume which is linear…

Geometric Topology · Mathematics 2016-05-11 Maxime Bergeron , Tali Pinsky , Lior Silberman

Any action of a group $\Gamma$ on $\mathbb H^3$ by isometries yields a class in degree three bounded cohomology by pulling back the volume cocycle to $\Gamma$. We prove that the bounded cohomology of finitely generated Kleinian groups…

Geometric Topology · Mathematics 2018-11-21 James Farre

In this paper we prove a characterization of $p$-hyperbolic ends on complete Riemannian manifolds which carries a Sobolev type inequality.

Differential Geometry · Mathematics 2014-01-15 Marcio Batista , Marcos Petrucio Cavalcante , Newton Santos

We show that the renormalized volume of a quasifuchsian hyperbolic 3-manifold is equal, up to an additive constant, to the volume of its convex core. We also provide a precise upper bound on the renormalized volume in terms of the…

Differential Geometry · Mathematics 2017-01-31 Jean-Marc Schlenker

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

Let $O$ be a closed $n$-dimensional arithmetic (real or complex) hyperbolic orbifold. We show that the diameter of $O$ is bounded above by $$\frac{c_1\log vol(O) + c_2}{h(O)},$$ where $h(O)$ is the Cheeger constant of $O$, $vol(O)$ is its…

Metric Geometry · Mathematics 2021-02-25 Mikhail Belolipetsky

In this article we study the spectrum of totally geodesic surfaces of a finite volume hyperbolic 3-manifold. We show that for arithmetic hyperbolic 3-manifolds that contain a totally geodesic surface, this spectrum determines the…

Geometric Topology · Mathematics 2016-11-16 D. B. McReynolds , Alan W. Reid

We prove that any complete hyperbolic 3--manifold with finitely generated fundamental group, with a single topological end, and which embeds into $\BS^3$ is the geometric limit of a sequence of hyperbolic knot complements in $\BS^3$. In…

Geometric Topology · Mathematics 2014-02-26 Jessica S. Purcell , Juan Souto
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