Time

Oct 23 2008 - 3:30pm - 4:30 pm

Location

MA 240

Speaker

Honglin Min (OSU)

Seminar Website

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

Abstract

We find some conditions which are sufficient for the fundamental groups of the graph of surface groups to be hyperbolic. This is an extension result of Mosher's 'a hyperbolic-by-hyperboli hyperbolic group'. By applying these conditions and other methods, we construct an example of such a group which is distinct from all the hyperbolic groups constructed in that paper of Mosher. This means that this example is not commensurate to any surface-by-free group.