Geometry and Physics Seminar: Sabin Cautis

  • Date: 09/23/2013
  • Time: 15:10
Sabin Cautis- UBC

University of British Columbia


Categorical Heisenberg actions on Hilbert schemes of points


We define actions of certain Heisenberg algebras on the Hilbert schemes of points on ALE spaces. This lifts constructions of Nakajima and Grojnowski from cohomology to K-theory and derived categories of coherent sheaves. This action can be used to define Lie algebra actions (using categorical vertex operators) and subsequently braid group actions and knot invariants.

Other Information: 

Location: ESB 4127