Thursday, May 24, 14:00, 7.527
Alastair King (Bath)
Cluster exchange groupoids and decorated marked surfaces.

Abstract:
I will explain how to turn the cluster exchange graph of triangulations of a marked surface into a groupoid in such way that the universal cover can be constructed using `decorated' triangulations. As an application, the space of Bridgeland stability conditions for the associated Ginzburg algebra is simply connected.