# UCSB Differential Geometry Seminar 2020-2021

The talks are held on every Friday on Zoom. Time and Meeting ID TBA.

## Fall 2020

Friday, October 9: **Akos Nagy**

Title:

Abstract:

Friday, October 16: **Jiayin Pan**

Title: Nonnegative Ricci curvature and escape rate gap

Abstract: Let $M$ be an open $n$-manifold of nonnegative Ricci curvature and let $p\in M$. We show that if $(M,p)$ has escape rate less than some positive constant $\epsilon(n)$, that is, minimal representing geodesic loops of $\pi_1(M,p)$ escape from any bounded balls at a small linear rate with respect to their lengths, then $\pi_1(M,p)$ is virtually abelian.

Friday, October 23: **Junrong Yan**

Title:

Abstract:

## 2019-2020 Academic year: link

## Before Fall 2019: link