Seminar Event Detail

Geometry & Physics

Date:  Monday, April 01, 2019
Location:  4096 East Hall (4:00 PM to 6:00 PM)

Title:  Quasimap wall-crossing for GIT quotients

Abstract:   For a large class of GIT quotients X=W//G, Ciocan-Fontanine--Kim--Maulik and many others have developed the theory of epsilon-stable quasimap invariants. They are conjecturally equivalent to the Gromov--Witten invariants of X via explicit wall-crossing formulae, which have been proved in many cases, including targets with good torus action and complete intersections in a product of projective spaces.

In this talk, we will give a proof for all targets in all genera. The main ingredient is the construction of some moduli space with C^* action whose fixed-point loci precisely correspond to the terms in the wall-crossing formulae.


Speaker:  Yang Zhou
Institution:  Harvard

Event Organizer:     


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