Singular Supports for Character Sheaves on a Group Compactification

Author(s)
He, Xuhua; Lusztig, George; 
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Abstract
Let G be a semisimple adjoint group over C and Ḡ be the De Concini–Procesi completion of G. In this paper, we define a Lagrangian subvariety Λ of the cotangent bundle of Ḡ such that the singular support of any character sheaf on Ḡ is contained in Λ.
Date issued
2008-01-30
URI
https://hdl.handle.net/1721.1/140248
Department
Massachusetts Institute of Technology. Department of Mathematics
Journal
Geometric and Functional Analysis
Publisher
Springer Nature America, Inc
Citation
He, X., Lusztig, G. Singular Supports for Character Sheaves on a Group Compactification. GAFA Geom. funct. anal. 17, 1915–1923 (2008)
Version: Original manuscript
ISSN
1016-443X
1420-8970
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