EVENT DETAILS AND ABSTRACT

Title: Spin Hurwitz Numbers and TQFT
Speaker: Sam Gunningham
Speaker Info: NU
Brief Description:
Special Note:
Abstract:

Spin Hurwitz numbers count ramified covers of surfaces with a sign according to the Atiyah invariant of the covering surface. I will describe how to compute these numbers using ideas from TQFT, homotopy theory, and (spin) representation theory of the symmetric group.