{ "id": "1510.05554", "version": "v1", "published": "2015-10-19T16:03:51.000Z", "updated": "2015-10-19T16:03:51.000Z", "title": "Topological models of finite type for tree almost automorphism groups", "authors": [ "Roman Sauer", "Werner Thumann" ], "comment": "18 pages", "categories": [ "math.GR", "math.GT" ], "abstract": "We show that tree almost automorphism groups, including Neretin groups, satisfy the analogue of the $F_\\infty$-finiteness condition in the world of totally disconnected groups: They possess a cellular action on a contractible cellular complex such that the stabilizers are open and compact and the restriction of the action on each $n$-skeleton is cocompact.", "revisions": [ { "version": "v1", "updated": "2015-10-19T16:03:51.000Z" } ], "analyses": { "subjects": [ "55R35", "20E08", "22D05" ], "keywords": [ "automorphism groups", "finite type", "topological models", "neretin groups", "finiteness condition" ], "note": { "typesetting": "TeX", "pages": 18, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv151005554S" } } }