Every compact group arises as the outer automorphism group of a II_1 factor

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We show that any compact group can be realized as the outer automorphism group of a factor of type II_1. This has been proved in the abelian case by Ioana, Peterson and Popa applying Popa's deformation/rigidity techniques to amalgamated free product von Neumann algebras. Our methods are a generalization of theirs.
Minor misprints corrected, final version

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Operator Algebras

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http://salesiana.dossiersoluciones.com/handle/123456789/157982

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0705.1420
 http://arxiv.org/abs/0705.1420
 Journal of Functional Analysis, vol. 254 (2008), 2317--2328.

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