Homological Filling Functions

3 June 2015
16:00
Robert Kropholler
Abstract

I will discuss various types of filling functions on topological spaces, stating some results in the area. I will then go onto prove that a finitely presented subgroup of a hyperbolic group of cohomological dimension 2 is hyperbolic. On the way I will prove a stronger result about filling functions of subgroups of hyperbolic groups of cohomological dimension $n$.

  • Junior Topology and Group Theory Seminar