{ "id": "math/0211022", "version": "v2", "published": "2002-11-01T20:52:30.000Z", "updated": "2003-08-06T04:24:01.000Z", "title": "Tameness on the boundary and Ahlfors' measure conjecture", "authors": [ "Jeffrey Brock", "Kenneth Bromberg", "Richard Evans", "Juan Souto" ], "comment": "New revised version, 22 pages. To appear, Publ. I.H.E.S. This version represents a fairly substantial reorganization of the logical structure of the paper", "categories": [ "math.GT" ], "abstract": "Let N be a complete hyperbolic 3-manifold that is an algebraic limit of geometrically finite hyperbolic 3-manifolds. We show N is homeomorphic to the interior of a compact 3-manifold, or tame, if one of the following conditions holds: (1) N has non-empty conformal boundary, (2) N is not homotopy equivalent to a compression body, or (3) N is a strong limit of geometrically finite manifolds. The first case proves Ahlfors' measure conjecture for Kleinian groups in the closure of the geometrically finite locus: given any algebraic limit G of geometrically finite Kleinian groups, the limit set of G is either of Lebesgue measure zero or all of the Riemann sphere. Thus, Ahlfors' conjecture is reduced to the density conjecture of Bers, Sullivan, and Thurston.", "revisions": [ { "version": "v2", "updated": "2003-08-06T04:24:01.000Z" } ], "analyses": { "subjects": [ "30F40", "37F30" ], "keywords": [ "measure conjecture", "algebraic limit", "non-empty conformal boundary", "geometrically finite kleinian groups", "lebesgue measure zero" ], "note": { "typesetting": "TeX", "pages": 22, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2002math.....11022B" } } }