Event Type:

Geometry-Topology Seminar

Date/Time:

Monday, April 24, 2017 - 12:00 to 13:00

Location:

Stag 163

Guest Speaker:

Institution:

University of Oregon

Abstract:

After recalling the Jones polynomial of a knot, we will sketch the definition of two refinements: Khovanov homology and a Khovanov stable homotopy type. We will then discuss briefly how, following ideas of Lee, Ozsvath-Szabo, and Rasmussen, these can be used to obtain results about surfaces in 4-space bounded by a knot. This is joint work with Tyler Lawson and Sucharit Sarkar. There is related work by Hu-Kriz-Kriz.

Host: