Event Type:

Topology Seminar

Date/Time:

Tuesday, May 1, 2007 - 08:00

Location:

Kidd 236

Abstract:

In previous talks, we had a brief introduction to Bass-Serre Theory, culminating in the fact that if a group acts on a tree then it can be decomposed into free products with amalgamations and HNN extensions. We will discuss the converse of this Theorem in the basic cases by constructing a tree upon which a free product or HNN extension will act.