{ "id": "2206.07943", "version": "v1", "published": "2022-06-16T06:27:17.000Z", "updated": "2022-06-16T06:27:17.000Z", "title": "Cohomology of $\\frak{sl}(2)$ and its applications in prime characteristic", "authors": [ "Shujuan Wang", "Zhaoxin Li" ], "categories": [ "math.RT" ], "abstract": "Over a field of characteristic $p>2,$ the first cohomology of the 3-dimensional simple Lie algebra $\\frak{sl}(2)$ with coefficients in all simple modules is determined, which implies Whitehead's first lemma is not true in prime characteristic. As applications, derivations and 2-local derivations of $\\frak{sl}(2)$ on any simple module are also be characterized.", "revisions": [ { "version": "v1", "updated": "2022-06-16T06:27:17.000Z" } ], "analyses": { "subjects": [ "17B40", "17B50", "17B56" ], "keywords": [ "prime characteristic", "applications", "implies whiteheads first lemma", "simple module", "simple lie algebra" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }