Speaker: 

Professor Panagiota Daskalopoulos

Institution: 

Columbia University

Time: 

Tuesday, October 14, 2008 - 4:00pm

Location: 

RH 306

We classify compact ancient solutions of the curve
shortening flow and the Ricci flow on Surfaces. We show that these are either a family of contracting circles (contracting spheres in the case of the Ricci flow on surfaces), which is a type I ancient solution,or a family of Angenent ovals (Rosenau solutions in the case of the Ricci flow on surfaces), which corresponds to a type II
solution.