# Geometry & Topology

Last updated: 2018/01/18 - 4:21am

#### Sasaki-Einstein metrics and K-stability

##### Tristan Collins (Harvard University, Mathematics)
Friday, January 19 - 12:00 pm
Physics 119

I will discuss the connection between Sasaki-Einstein metrics and algebraic geometry in the guise of K-stability. In particular, I will give a differential geometric perspective on K-stability which...

#### Length of a shortest closed geodesic in manifolds of dimension 4

##### Nan Wu (University of Toronto)
Monday, January 22 - 3:15 pm
119 Physics

In this talk, we show that for any closed 4-dimensional simply-connected Riemannian manifold $M$ with Ricci curvature $|Ric| \leq 3$, volume $vol(M)>v>0$ and diameter \$diam(M) \leq D...