Actions of small cancellation groups on hyperbolic spaces
Abstract
We generalize Gruber--Sisto's construction of the coned--off graph of a small cancellation group to build a partially ordered set of cobounded actions of a given small cancellation group whose smallest element is the action on the Gruber--Sisto coned--off graph. In almost all cases is incredibly rich: it has a largest element if and only if it has exactly 1 element, and given any two distinct comparable actions in this poset, there is an embeddeding such that and . We use this poset to prove that there are uncountably many quasi--isometry classes of finitely generated group which admit two cobounded acylindrical actions on hyperbolic spaces such that there is no action on a hyperbolic space which is larger than both.
Cite
@article{arxiv.1807.10524,
title = {Actions of small cancellation groups on hyperbolic spaces},
author = {Carolyn Abbott and David Hume},
journal= {arXiv preprint arXiv:1807.10524},
year = {2018}
}
Comments
42 pages, 14 figures