Event Detail

Event Type: 
Geometry-Topology Seminar
Date/Time: 
Monday, April 24, 2017 - 12:00 to 13:00
Location: 
Stag 163

Speaker Info

Guest Speaker: 
Robert Lipshitz
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: 
Christine M. Escher