{ "id": "math/0109166", "version": "v1", "published": "2001-09-22T22:12:46.000Z", "updated": "2001-09-22T22:12:46.000Z", "title": "Free actions on handlebodies", "authors": [ "Darryl McCullough", "Marcus Wanderley" ], "categories": [ "math.GT" ], "abstract": "The equivalence (or weak equivalence) classes of orientation-preserving free actions of a finite group G on an orientable 3-dimensional handlebody of genus g can be enumerated in terms of sets of generators of G. They correspond to the equivalence classes of generating n-vectors of elements of G, where n=1+(g-1)/|G|, under Nielsen equivalence (or weak Nielsen equivalence). For abelian and dihedral G, this allows a complete determination of the equivalence and weak equivalence classes of actions for all genera. Additional information is obtained for solvable groups and for the groups PSL(2,3^p) with p prime. For all G, there is only one equivalence class of actions on the genus g handlebody if g is at least 1+r(G)|G|, where r(G) is the maximal length of a chain of subgroups of G. There is a stabilization process that sends an equivalence class of actions to an equivalence class of actions on a higher genus, and some results about its effects are obtained.", "revisions": [ { "version": "v1", "updated": "2001-09-22T22:12:46.000Z" } ], "analyses": { "subjects": [ "57M60" ], "keywords": [ "handlebody", "weak nielsen equivalence", "weak equivalence classes", "orientation-preserving free actions", "complete determination" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2001math......9166M" } } }