Green functions via hyperbolic localization.
Pramod N. AcharDepartment of Mathematics Louisiana State University Baton Rouge LA 70803 USA
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. 869–884DOI 10.4171/DM/353