Time

Oct 21 2008 - 3:30pm - 4:30 pm

Location

MA 240

Speaker

Marc Bourdon (Lille, France)

Seminar Website

http://www.math.ohio-state.edu/~sgal/ggt/

Abstract

For word hyperbolic Coxeter groups we establish that the combinatorial moduli of their boundaries satisfy a hierarchy phenomenum. As an application we obtain that any word hyperbolic Coxeter group whose boundary is a topological 2-sphere is virtually a Kleinan groups. This is a joint work with B. Kleiner.