Quotient of Deligne-Lusztig varieties

JOURNAL OF ALGEBRA

卷:381

Article

Dudas, Olivier

关键词: Deligne-Lusztig varieties;    Schubert varieties;    Deodhar decomposition;   

DOI  :  10.1016/j.jalgebra.2013.01.032

来源: Elsevier

【 摘 要 】

We study the quotient of parabolic Deligne-Lusztig varieties by a finite unipotent group U-F where U is the unipotent radical of a rational parabolic subgroup P = LU. We show that in some particular cases the cohomology of this quotient can be expressed in terms of smaller parabolic Deligne-Lusztig varieties associated to the Levi subgroup L (C) 2013 Elsevier Inc. All rights reserved.

【 授权许可】

Free