Ricci Curvature and the Fundamental Group

发布时间：2025-05-06 作者：浏览次数：

Speaker:	黄显涛	DateTime:	2025年5月6日（周二）下午16:00-17:00
Brief Introduction to Speaker: 中山大学		Place:	国交2号楼315会议室
Abstract:In this talk, I will review the research on the fundamental groups on noncompact manifolds with nonnegative Ricci curvature. And then I will introduce a recent joint work with Hongzhi Huang which says that if M is a 4-dimensional open manifold with nonnegative Ricci curvature, and its universal cover has Euclidean volume growth, then the fundamental group of M is finitely generated and contains an abelian subgroup whose index is bounded by a universal contant