ON A THEOREM OF BRADEN

ON A THEOREM OF BRADEN

We give a new proof of Braden’s theorem ([Br]) about hyperbolic restrictions of constructible sheaves/D-modules. The main geometric ingredient in the proof is a 1-parameter family that degenerates a given scheme Z equipped with a m -action to the product of the attractor and repeller loci.

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Veröffentlicht in:Transformation groups 2014-06, Vol.19 (2), p.313-358
Hauptverfasser: DRINFELD, V., GAITSGORY, D.
Format: Artikel
Sprache:eng
Schlagworte:
Algebra
Lie Groups
Mathematics
Mathematics and Statistics
Topological Groups
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Zusammenfassung:We give a new proof of Braden’s theorem ([Br]) about hyperbolic restrictions of constructible sheaves/D-modules. The main geometric ingredient in the proof is a 1-parameter family that degenerates a given scheme Z equipped with a m -action to the product of the attractor and repeller loci.
ISSN:1083-4362
1531-586X
DOI:10.1007/s00031-014-9267-8