Abstract
We introduce a new version of 3d mirror symmetry for the toric quotient stack [Cn/K] where K=(Câ)k and the torus action is determined by the given charge matrix. It is inspired by a 3d N=2 abelian mirror symmetry construction in physics. Given some toric data, we introduce the K-theoretic I-function with the effective level structure for the associated quotient stack. When a particular stability condition is chosen, it restricts to the I-function for the particular toric variety. The mirror of a GIT quotient stack is defined by the Gale dual of the original toric data. We then prove the mirror conjecture that the I-functions of a mirror pair coincide, under the mirror map, which switches KĂ€hler and equivariant parameters, and changes q to qâ1.
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