{ "id": "math/0607600", "version": "v1", "published": "2006-07-24T15:52:54.000Z", "updated": "2006-07-24T15:52:54.000Z", "title": "Measure equivalence rigidity of the mapping class group", "authors": [ "Yoshikata Kida" ], "comment": "39 pages", "journal": "Ann.of Math.(2) 171 (2010) 1851-1901", "doi": "10.4007/annals.2010.171.1851", "categories": [ "math.GR", "math.GT" ], "abstract": "We show that the mapping class group of a compact orientable surface with higher complexity has the following extreme rigidity in the sense of measure equivalence: if the mapping class group is measure equivalent to a discrete group, then they are commensurable up to finite kernel. Moreover, we describe all lattice embeddings of the mapping class group into a locally compact second countable group. We also obtain similar results for finite direct products of mapping class groups.", "revisions": [ { "version": "v1", "updated": "2006-07-24T15:52:54.000Z" } ], "analyses": { "subjects": [ "20F38", "37A20" ], "keywords": [ "mapping class group", "measure equivalence rigidity", "finite direct products", "locally compact second countable group", "extreme rigidity" ], "tags": [ "journal article" ], "publication": { "publisher": "Princeton University and the Institute for Advanced Study", "journal": "Ann. Math." }, "note": { "typesetting": "TeX", "pages": 39, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2006math......7600K" } } }