报告题目：Almost nonnegative curvature manifolds

报告人：葛剑（北京师范大学）

时间：2022年10月20日 14:00-15:00

地点：腾讯会议号：574 581 632，无需密码

报告摘要：

The first half of the talk will be a survey on the class of almost nonnegatively curved manifolds. Here the curvature means sectional curvature or Ricci curvature. Then I will talk about a recent joint work with CHEN Xiaoyang and HAN Fei, in which vanishing theorems on certain genus of these manifolds are proved under an extra necessary assumption on the fundamental group.