The classical results on stratifications for cohomology varieties of finite groups and their modules due to Quillen (Ann. Math. 94 (1971) 549-572; 573-602) and Avrunin-Scott (invent, Math. 66 (1982) 277-286) carry over to the varieties associated with finitely-generated modules over p-blocks of finite groups, introduced in Linckelmann (J. Algebra 215 (1999) 460-480). (C) 2001 Elsevier Science B.V. All rights reserved.
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