2 papers
math.GR2021
Product set growth in virtual subgroups of mapping class groups
Alice Kerr
We study product set growth in groups with acylindrical actions on quasi-trees and, more generally, hyperbolic spaces. As a consequence, we show that for every surface of finit…
math.MG2020
Tree approximation in quasi-trees
Alice Kerr
In this paper we investigate the geometric properties of quasi-trees, and prove some equivalent criteria. We give a general construction of a tree that approximates the ends of a g…