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Moore-Tachikawa conjecture, affine Grassmannian and Coulomb branches of star-shaped quivers

Moore and Tachikawa conjecture that there exists a functor from the category of 2-bordisms to a certain category whose objects are algebraic groups and morphisms between $G$ and $H$ are given by affine symplectic varieties with an action of $G\times H$.  I will explain a proof of this conjecture due to Ginsburg and Kazhdan, and its relation to Coulomb branches of certain quiver gauge theories which allows to make interesting calculations.

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Monday, October 2, 2017 - 14:00 to 15:30
Sky Room
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