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Title:
Big I-functions
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Abstract:
We introduce a new big I-function for certain GIT quotients W//G using the quasimap graph space from infinitesimally pointed projective line to the stack quotient [W/G]. This big I-function is expressible by the small I-function and conjecturally generates the Lagrangian cone of Gromov-Witten theory for W//G defined by Givental. This talk is based on a joint work with Ionut Ciocan-Fontanine.
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