Title：On Hang-Wang type rigidity theorem

Speaker：来米加（上海交通大学）

Time：2019年5月24日       下午  16:00-17:30

Room：东区管理科研楼  0029cc金沙贵宾会1308室

Abstract：Let (M, g) be a compact manifold with boundary and Ric /geq n-1, Hang-Wang proved M is isometric to the standard hemisphere provided /partial M is isometric to standard S^{n-1} and convex. In this talk, we discuss some recent results of Hang-Wang type rigidity when the boundary is isometric to a product manifold with one factor isometric to S^{k-1}. A new ingredient of the proof is Obata type equation with Robin boundary condition.