The Abelian–Nonabelian Correspondence for I -Functions

Source abstract

Abstract We prove the abelian–nonabelian correspondence for quasimap $I$-functions. That is, if $Z$ is an affine l.c.i. variety with an action by a complex reductive group $G$, we prove an explicit formula relating the quasimap $I$-functions of the geometric invariant theory quotients $Z\mathord{/\mkern -6mu/}_{\theta } G$