{ "id": "1712.08103", "version": "v1", "published": "2017-12-21T17:37:20.000Z", "updated": "2017-12-21T17:37:20.000Z", "title": "Nilpotent residual of fixed points", "authors": [ "Emerson de Melo", "Aline de Souza Lima", "Pavel Shumyatsky" ], "categories": [ "math.GR" ], "abstract": "Let $q$ be a prime and $A$ a finite $q$-group of exponent $q$ acting by automorphisms on a finite $q'$-group $G$. Assume that $A$ has order at least $q^3$. We show that if $\\gamma_{\\infty} (C_{G}(a))$ has order at most $m$ for any $a \\in A^{\\#}$, then the order of $\\gamma_{\\infty} (G)$ is bounded solely in terms of $m$ and $q$. If $\\gamma_{\\infty} (C_{G}(a))$ has rank at most $r$ for any $a \\in A^{\\#}$, then the rank of $\\gamma_{\\infty} (G)$ is bounded solely in terms of $r$ and $q$.", "revisions": [ { "version": "v1", "updated": "2017-12-21T17:37:20.000Z" } ], "analyses": { "keywords": [ "nilpotent residual", "fixed points", "automorphisms" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }