Date & Time: Wednesday, April 01, 2009, 16:00-17:00.
Venue: Ramanujan Hall
Title: Ricci Flow and Sphere Theorems
Speaker: Harish Seshadri, IISc Bangalore
Abstract: Sphere theorems give curvature conditions under which a Riemannian n-manifold is diffeomorphic to the n-sphere. Recently two major sphere theorems were proved by Böhm-Wilking and Brendle-Schoen. I will try to give a rough outline of the proofs and describe some interesting consequences.