Decomposition of Marsden-Weinstein reductions for representations of quivers
Abstract
Description
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.
12 pages; correction: the arguments do not prove reducedness of the schemes
12 pages; correction: the arguments do not prove reducedness of the schemes