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Normality of orbit closures in the enhanced nilpotent cone
Published online by Cambridge University Press: 11 January 2016
Abstract
We continue the study of the closures of GL(V)-orbits in the enhanced nilpotent cone V × N begun by the first two authors. We prove that each closure is an invariant-theoretic quotient of a suitably defined enhanced quiver variety. We conjecture, and prove in special cases, that these enhanced quiver varieties are normal complete intersections, implying that the enhanced nilpotent orbit closures are also normal.
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- Research Article
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- Copyright © Editorial Board of Nagoya Mathematical Journal 2011
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