题  目：A four vertex theorem for space curve on locally convex surface

报告人：周斌 副教授（北京大学）

摘  要：The classical four vertex theorem characterizes an interesting property of closed planar curves. It has been extended to space curves on sphere and on more general convex surfaces, namely a smooth, closed curve in R^3 has at least four points with vanishing torsion if it lies on a convex surface. In this talk we discuss the four vertex theorem for space curves on locally convex surfaces by using the properties of homogeneous Monge-Ampere equation. This is a joint work with Shibing Chen and Xu-jia Wang.

时  间：2019年3月22日 10:00-12:00

地  点：蒙民伟楼1105

邀请人：石亚龙  老师