Decomposition of Marsden-Weinstein reductions for representations of quivers
William Crawley-Boevey
Abstract
We decompose the Marsden-Weinstein reductions for the moment map associated to representations of a quiver. The decomposition involves symmetric products of deformations of Kleinian singularities, as well as other terms. As a corollary we deduce that the Marsden-Weinstein reductions are irreducible varieties.
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