Actions of parabolic subgroups in GL_n on unipotent normal subgroups and quasi-hereditary algebras
نویسندگان
چکیده
منابع مشابه
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Let G be a reductive algebraic group, P a parabolic subgroup of G with unipotent radical Pu, and A a closed connected unipotent subgroup of Pu which is normalized by P. We show that P acts on A with nitely many orbits provided A is abelian. This generalizes a well-known niteness result, namely the case when A is central in Pu. We also obtain an analogous result for the adjoint action of P on in...
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ژورنال
عنوان ژورنال: Colloquium Mathematicum
سال: 2000
ISSN: 0010-1354,1730-6302
DOI: 10.4064/cm-83-2-281-294