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Quiver varieties and tensor products, II (1207.0529v2)
Published 2 Jul 2012 in math.QA and math.RT
Abstract: We define a family of homomorphisms on a collection of convolution algebras associated with quiver varieties, which gives a kind of coproduct on the Yangian associated with a symmetric Kac-Moody Lie algebra. We study its property using perverse sheaves