{ "id": "1306.3385", "version": "v3", "published": "2013-06-14T12:53:23.000Z", "updated": "2013-10-15T15:51:19.000Z", "title": "Extensions for Finite Chevalley Groups III: Rational and Generic Cohomology", "authors": [ "Christopher P. Bendel", "Daniel K. Nakano", "Cornelius Pillen" ], "comment": "Corrected proof of Theorem 5.1.1, added Remark 5.2.3", "categories": [ "math.RT" ], "abstract": "Let $G$ be a connected reductive algebraic group and $B$ be a Borel subgroup defined over an algebraically closed field of characteristic $p>0$. In this paper, the authors study the existence of generic $G$-cohomology and its stability with rational $G$-cohomology groups via the use of methods from the authors' earlier work. New results on the vanishing of $G$ and $B$-cohomology groups are presented. Furthermore, vanishing ranges for the associated finite group cohomology of $G({\\mathbb F}_{q})$ are established which generalizes earlier work of Hiller, in addition to stability ranges for generic cohomology which improves on seminal work of Cline, Parshall, Scott and van der Kallen.", "revisions": [ { "version": "v3", "updated": "2013-10-15T15:51:19.000Z" } ], "analyses": { "subjects": [ "20G10" ], "keywords": [ "finite chevalley groups", "generic cohomology", "cohomology groups", "extensions", "associated finite group cohomology" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2013arXiv1306.3385B" } } }