Green functions via hyperbolic localization
Pramod N. Achar
Department of Mathematics Louisiana State University Baton Rouge LA 70803 USA
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Abstract
Let be a reductive algebraic group, with nilpotent cone and flag variety . We construct an exact functor from perverse sheaves on to locally constant sheaves on , and we use it to study Ext-groups and stalks of simple perverse sheaves on in terms of the cohomology of .
Cite this article
Pramod N. Achar, Green functions via hyperbolic localization. Doc. Math. 16 (2011), pp. 869–884
DOI 10.4171/DM/353