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ON THE STRUCTURAL THEORY OF II1 FACTORS OF NEGATIVELY CURVED GROUPS
Journal article

ON THE STRUCTURAL THEORY OF II1 FACTORS OF NEGATIVELY CURVED GROUPS

Ionut Chifan and Thomas Sinclair
Annales scientifiques de l'École normale supérieure, Vol.46(1), pp.1-33
01/01/2013
DOI: 10.24033/asens.2183
url
https://arxiv.org/pdf/1103.4299View
Open Access

Abstract

Ozawa showed in [21] that for any i.c.c, hyperbolic group, the associated group factor L Gamma is solid. Developing a new approach that combines some methods of Peterson [29], Ozawa and Popa [27, 28], and Ozawa [25], we strengthen this result by showing that LP is strongly solid. Using our methods in cooperation with a cocycle superrigidity result of Ioana [12], we show that profinite actions of lattices in Sp (n, 1), n >= 2, are virtually W*-superrigid.
Mathematics Physical Sciences Science & Technology

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