主讲人：王立河 教授（美国Iowa大学）

时  间：7月9日（周二）15:00-16:00

地  点：威尼斯欢乐娱人城1099北二区教学楼 132 教室

摘  要：I will talk about a joint work with Feiyao Ma and Diego Moreira. The work is toward an understanding of optimal condition of the boundary so that the solution is differentiable. In contrast to the classical C^1 Dini condition, we show that the solution is C^1 if the boundary is geometrical C^1 Dini. We will also review the classical regularity theorems related to this issue.