Title: GLSM and wall-crossing for the mirror quintic

Abstract: Mathematical theory of Gauged Linear Sigma Model (GLSM) was defined by Fan, Jarvis and Ruan and is a curve counting theory roughly capturing GW theory of a critical locus in a GIT quotient. Wall-crossing in the stability space of the GIT leads to wall-crossing for corresponding curve counting theories. In the talk I will explain how this works on the example of the 101-dimensional stability parameter space associated to the mirror quintic. The talk is based on a joint work in progress with Melissa Liu.