{ "id": "1704.04449", "version": "v1", "published": "2017-04-14T15:14:27.000Z", "updated": "2017-04-14T15:14:27.000Z", "title": "Central stability for the homology of congruence subgroups and the second homology of Torelli groups", "authors": [ "Jeremy Miller", "Peter Patzt", "Jennifer C. H. Wilson" ], "comment": "34 pages, 3 figures. Comments welcome", "categories": [ "math.AT", "math.GR", "math.GT", "math.RT" ], "abstract": "We prove a representation stability result for the second homology groups of Torelli subgroups of mapping class groups and automorphism groups of free groups. This strengthens the results of Boldsen-Hauge Dollerup and Day-Putman. We also prove a new representation stability result for the homology of certain congruence subgroups, partially improving upon the work of Putman-Sam. These results follow from a general theorem on syzygies of certain modules with finite polynomial degree.", "revisions": [ { "version": "v1", "updated": "2017-04-14T15:14:27.000Z" } ], "analyses": { "subjects": [ "20J06", "11F75", "18A25", "55U10" ], "keywords": [ "congruence subgroups", "torelli groups", "central stability", "representation stability result", "second homology groups" ], "note": { "typesetting": "TeX", "pages": 34, "language": "en", "license": "arXiv", "status": "editable" } } }