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Rings of regular functions on nilpotent orbits and their covers
Authors:William M. McGovern
Affiliation:(1) Mathematical Sciences Research Institute, 94720 Berkeley, CA, USA
Abstract:Summary LetG be a complex semisimple algebraic group with Lie algebra
$$mathfrak{g}$$
. Let
$$mathcal{O} subset mathfrak{g}$$
be a nilpotentG-orbit,
$$R(mathcal{O})$$
its ring of regular functions. We derive a formula for
$$R(mathcal{O})$$
as aG-module and prove some partial results on
$$R(tilde {mathcal{O}}),tilde {mathcal{O}}$$
a cover of
$$mathcal{O}$$
. We then relate this formula to various existing multiplicity formulas forK-types in Harish-Chandra bimodules ofG.Supported by National Science Foundation Grant DMS-8505550
Keywords:
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