Topological entropy of some automorphisms of reduced amalgamated free product C*-algebras
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Certain classes of automorphisms of reduced 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 Strmer's result about the entropy of automorphisms of the II1-factor of a free group.
ERGODIC THEORY AND DYNAMICAL SYSTEMS
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