Hyperbolic 3-manifolds with boundary of polyhedral type

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Auteur principal: Prosanov, Roman
Format: Preprint
Publié: 2022
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author Prosanov, Roman
author_facet Prosanov, Roman
contents Let $M$ be a compact orientable 3-manifold with hyperbolizable interior and non-empty boundary such that all boundary components have genii at least 2. We study an Alexandrov-Weyl-type problem for convex hyperbolic cone-metrics on $\partial M$. We consider a class of hyperbolic metrics on M with convex boundary, which we call bent metrics, and which naturally generalize hyperbolic metrics on $M$ with convex polyhedral boundary. We show that for each convex hyperbolic cone-metric $d$ on $\partial M$, with few simple exceptions, there exists a bent metric on $M$ such that the induced intrinsic metric on $\partial M$ is $d$. Next, we prove that if a bent realization is what we call controllably polyhedral, then it is unique up to isotopy. We exhibit a large subclass of hyperbolic cone-metrics on $\partial M,$ called balanced, which is open and dense among all convex hyperbolic cone-metrics in the sense of Lipschitz topology, and for which we show that their bent realizations are controllably polyhedral. We additionally prove that any convex realization of a convex hyperbolic cone-metric on $\partial M$ is bent. Finally, we deduce that there exists an open subset of the space of convex cocompact metrics on the interior of $M$, including all metrics with polyhedral convex cores, such that the metrics in this subset are (1) globally rigid with respect to the induced intrinsic metrics on the boundaries of their convex cores; (2) infinitesimally rigid with respect to their bending laminations. This gives partial progress towards conjectures of W. Thurston.
format Preprint
id arxiv_https___arxiv_org_abs_2210_17271
institution arXiv
publishDate 2022
record_format arxiv
spellingShingle Hyperbolic 3-manifolds with boundary of polyhedral type
Prosanov, Roman
Geometric Topology
Metric Geometry
52B70, 57K32, 52A55, 53C24, 53C45
Let $M$ be a compact orientable 3-manifold with hyperbolizable interior and non-empty boundary such that all boundary components have genii at least 2. We study an Alexandrov-Weyl-type problem for convex hyperbolic cone-metrics on $\partial M$. We consider a class of hyperbolic metrics on M with convex boundary, which we call bent metrics, and which naturally generalize hyperbolic metrics on $M$ with convex polyhedral boundary. We show that for each convex hyperbolic cone-metric $d$ on $\partial M$, with few simple exceptions, there exists a bent metric on $M$ such that the induced intrinsic metric on $\partial M$ is $d$. Next, we prove that if a bent realization is what we call controllably polyhedral, then it is unique up to isotopy. We exhibit a large subclass of hyperbolic cone-metrics on $\partial M,$ called balanced, which is open and dense among all convex hyperbolic cone-metrics in the sense of Lipschitz topology, and for which we show that their bent realizations are controllably polyhedral. We additionally prove that any convex realization of a convex hyperbolic cone-metric on $\partial M$ is bent. Finally, we deduce that there exists an open subset of the space of convex cocompact metrics on the interior of $M$, including all metrics with polyhedral convex cores, such that the metrics in this subset are (1) globally rigid with respect to the induced intrinsic metrics on the boundaries of their convex cores; (2) infinitesimally rigid with respect to their bending laminations. This gives partial progress towards conjectures of W. Thurston.
title Hyperbolic 3-manifolds with boundary of polyhedral type
topic Geometric Topology
Metric Geometry
52B70, 57K32, 52A55, 53C24, 53C45
url https://arxiv.org/abs/2210.17271