Colloquium abstracts

Yash Lodha
EPFL Lausanne, Switzerland
June 30, 2016

Groups of piecewise projective homeomorphisms:  Groups of piecewise projective homeomorphisms provide elegant examples of groups that are non amenable, yet do not contain non abelian free subgroups. In this talk I will present a survey of these groups and discuss their striking properties. I will discuss properties such as (non)amenability, finiteness properties, normal subgroup structure and Tarski numbers.