**CANCELED** Ancient gradient flows of elliptic functionals and Morse index
March 10, 2020 4:15 pm - 5:15 pm
Science Center 507
Address: 1 Oxford Street, Cambridge, MA 02138 USA
Christos Mantoulidis - MIT
(Joint with Kyeongsu Choi.) We study closed ancient solutions to gradient flows of elliptic functionals in Riemannian manifolds, focusing on mean curvature flow for the talk. In all dimensions and codimensions, we classify ancient mean curvature flows in S^n with low area: they are steady or canonically shrinking equators. In the mean curvature flow case in S^3, we classify ancient flows with more relaxed area bounds: they are steady or canonically shrinking equators or Clifford tori. In the embedded curve shortening case in S^2, we completely classify ancient flows of bounded length: they are steady or canonically shrinking equators.