When:

September 29, 2017 @ 3:30 pm – 4:30 pm

2017-09-29T15:30:00-10:00

2017-09-29T16:30:00-10:00

Where:

Keller 401

Speaker: Rufus Willett

Title: Positive curvature and index theory.

Abstract: Starting with two-dimensional surfaces, I’ll introduce positive (scalar) curvature. I’ll then discuss the relationship of this to index theory, a theory that counts the number of solutions to certain partial differential equations. Finally, I’ll mention the relevance of K-theory, a way of generalizing the notion of dimension of a vector space from fields to arbitrary rings.