{ "id": "1302.0507", "version": "v4", "published": "2013-02-03T16:30:25.000Z", "updated": "2014-09-23T15:55:27.000Z", "title": "Group actions on Spheres with rank one isotropy", "authors": [ "Ian Hambleton", "Ergun Yalcin" ], "comment": "22 pages. Trans. Amer. Math. Soc. (to appear); sequel to \"Homotopy Representations over the Orbit Category\", Homology, Homotopy and Applications (arXiv:1402.3306)", "categories": [ "math.GT", "math.AT" ], "abstract": "Let G be a rank two finite group, and let $\\cH$ denote the family of rank one p-subgroups of G, at all primes where G has p-rank two. We show that a rank two finite group G which satisfies certain group-theoretic conditions admits a finite G-CW-complex X with isotropy in $\\cH$, whose fixed sets are homotopy spheres. Our construction provides an infinite family of new non-linear G-CW-complex examples for many of the rank two finite simple groups.", "revisions": [ { "version": "v3", "updated": "2014-03-19T16:13:10.000Z", "abstract": "Let G be a rank two finite group, and let $\\cH$ denote the family of rank one p-subgroups of G, at all primes where G has p-rank two. We show that a rank two finite group G which satisfies certain group-theoretic conditions admits a finite G-CW-complex X with isotropy in $\\cH$, whose fixed sets are homotopy spheres. Our construction provides an infinite family of new examples.", "comment": "22 pages. This is the second part of a new two-part revision of this work. Some foundational results have been moved to the first part: \"Homotopy Representations over the Orbit Category\" (arXiv:1402.3306). In the new part two, we have improved the exposition and constructed non-linear G-CW complex examples for most of the finite simple groups G of rank two", "journal": null, "doi": null }, { "version": "v4", "updated": "2014-09-23T15:55:27.000Z" } ], "analyses": { "subjects": [ "57S17", "55U15", "20J05", "18Gxx" ], "keywords": [ "group actions", "finite group", "group-theoretic conditions admits", "finite g-cw-complex", "homotopy spheres" ], "note": { "typesetting": "TeX", "pages": 22, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2013arXiv1302.0507H" } } }