应002全讯白菜网数学系吴勃英教授邀请，美国俄亥俄州立大学关波教授于2017年6月1日访问数学系，并做学术报告，欢迎老师和同学参加。

报告时间：2017年6月1日（周四） 下午15：00—16：00

报告地点：格物楼503会议室

报告题目：The notion of subsolution and estimates for fully nonlinear equations on manifolds.

摘要：Subsolutions play very important roles in the study of fully nonlinear equations.In this talk we shall discuss different notions of subsections and how they can be used in deriving priori estimates for equations on closed manifolds. We shall also show the equivalence between some of the definitions for Type I cones (defined by Caffarelli,Nirenberg and Spruck). In the second part of the talk we shall discuss some preliminary results on gradient estimates for equations on Riemannian manifolds.