|GEOMETRY AND CELL COMPLEXES|
|Topic:||Invariants of Graphs, Their Associated Clique Complexes and Right-Angled Coxeter Groups|
|Affiliation:||The Ohio State University; Member, School of Mathematics|
|Date:||Tuesday, October 19|
|Time/Room:||2:00pm - 3:00pm/S-101|
Associated to any simplicial graph there is a right-angled Coxeter group. Invariants of the Coxeter group such as its growth series or its weighted L^2 Betti numbers can be computed from the graph's clique complex (i.e., its flag complex).