Hyperbolic spaces that detect all strongly-contracting directions
Group Theory
2024-04-19 v1 Metric Geometry
Abstract
Given a geodesic metric space , we construct a corresponding hyperbolic space, which we call the contraction space, that detects all strongly contracting directions in the following sense; a geodesic in is strongly contracting if and only if its parametrized image in the contraction space is a quasi-geodesic. If a finitely generated group acts geometrically on , then all strongly-contracting elements act as WPD elements on the contraction space. If the space is CAT(0), or more generally Morse-dichotomous, that is if all Morse geodesics are strongly-contracting, then all generalized loxodromics act as WPD elements, implying that the action is what we call ``universally WPD''.
Cite
@article{arxiv.2404.12162,
title = {Hyperbolic spaces that detect all strongly-contracting directions},
author = {Stefanie Zbinden},
journal= {arXiv preprint arXiv:2404.12162},
year = {2024}
}
Comments
27 pages, 5 figures. Comments welcome!