报告人：Francois Hamel, Aix-Marseille University

报告人简介:Francois Hamel，艾克斯-马赛大学教授，法国大学研究院研究员，毕业于著名的巴黎高师及索邦大学，是德国洪堡基金会Fellow，2014年入选高被引学者。

报告题目：Symmetry properties for the Euler equations and related stationary reaction-diffusion equations 

摘要： In this talk, I will discuss one-dimensional and radial symmetry properties for the solutions of the stationary incompressible Euler equations in dimension 2 and some (elliptic) stationary reaction-diffusion equations. I will show that a steady flow of an ideal incompressible fluid with no stagnation point and tangential boundary conditions in a two-dimensional strip is a parallel flow. The same conclusion holds for a bounded steady flow in a half-plane and in the whole plane. I will also discuss the case of circular flows in annular domains. The proofs are based on the study of the geometric properties of the streamlines of the flow and on one-dimensional and radial symmetry results for the solutions of some stationary reaction-diffusion equations. The talk is based on some joint works with N. Nadirashvili.

报告时间：7月8日,  16:30-18:00 (Harbin), 10:30-12:00 (Marseille)

报告链接：

Zoom webinar link:

https://zoom.com.cn/webinar/register/WN_Knd9WGMISXuFxHg1tHBEMA

Zoom webinar ID: 915 6845 6623

数学学院团委

数学学院

2020年7月7日