{ "id": "2105.05223", "version": "v2", "published": "2021-05-11T17:39:24.000Z", "updated": "2021-05-19T14:16:24.000Z", "title": "Bounded cohomology of classifying spaces for families of subgroups", "authors": [ "Kevin Li" ], "comment": "v2: 20 pages, added Theorem 4.5, incorporated Section 6 into Section 4", "categories": [ "math.GR", "math.AT" ], "abstract": "We introduce a bounded version of Bredon cohomology for groups relative to a family of subgroups. Our theory generalizes bounded cohomology and differs from Mineyev--Yaman's relative bounded cohomology for pairs. We obtain cohomological characterizations of relative amenability and relative hyperbolicity, analogous to the results of Johnson and Mineyev for bounded cohomology.", "revisions": [ { "version": "v2", "updated": "2021-05-19T14:16:24.000Z" } ], "analyses": { "subjects": [ "55N35", "20J06", "43A07", "20F67" ], "keywords": [ "classifying spaces", "theory generalizes bounded cohomology", "mineyev-yamans relative bounded cohomology", "bredon cohomology", "bounded version" ], "note": { "typesetting": "TeX", "pages": 20, "language": "en", "license": "arXiv", "status": "editable" } } }