Topological entropy of some automorphisms of reduced amalgamated free product C*-algebras

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Certain classes of automorphisms of recued amalgamated free products of C*-algebras are shown to have Brown-Voiculescu topological entropy zero. Also, for automorphisms of exact C*-algebras, the Connes-Narnhofer-Thirring entropy is shown to be bounded above by the Brown-Voiculescu entropy. These facts are applied to generalize Stormer's result about entropy of automorphisms of the II_1-factor of a free group.
13 pages

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Operator Algebras, 46L55

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http://salesiana.dossiersoluciones.com/handle/123456789/79332

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/9911010
 http://arxiv.org/abs/math/9911010

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arXiv