报告一: On Obata type rigidity theorems on manifolds with boundary(带边流形上Obata类型的刚性定理)

摘要: In this talk, I will report some recent progress on Obata type (\nabla^2 f+\varphi(f)g=0) rigidity theorems for manifolds with boundary.

This is a joint work with Xuzhang Chen and Fang Wang.

报告人: 来米加

时间: 2018.4.18(周三),13:30-15:00.

地点:3B304

报告人简介: 来米加, 上海交大特别研究员, 博导，2006年北大学士, 2011年爱荷华大学博士. 研究领域: 几何偏微分方程和几何分析。

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报告二: Fake Spherical Tilings(假的球面铺砖问题)

摘要: In this talk, we will talk about spherical polyhedral surfaces whose faces are isometric to spherical regular polygons in the unit sphere.
Besides spherical tilings, we consider spherical polyhedral surfaces with curvature at least one in the sense of Alexandrov. We show that
the volume of such a surface is less than 4pi-c, for some explicit constant c>0. This is a joint work with Yohji Akama and Yanhui Su.

报告人: 华波波

时间: 2018.4.18(周三),15:00-16:30.

地点:3B304

报告人简介: 华波波, 复旦副研究员, 博导, 国家青年千人， 2005年上海交大学士, 2010年复旦博士, 2011-2014年德国Max-Planck博后。

研究领域: 图和度量空间分析

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