Nhan-Phu Chung (Leipzig): Weak expansiveness for actions of sofic groups. Oberseminar C*-Algebren.
Tuesday, 10.12.2013 im Raum 15:15
Abstract: In this talk, we will define the asymptotic h-expansiveness
for actions of sofic groups and prove that these give a sufficient
condition for the existence of measures of maximal entropy for such
actions. We also prove that expansiveness implies asymptotic
h-expansiveness and as a consequence it answers a question raised by
Lewis Bowen about the existence of measures of maximal entropy for
expansive actions. Profinite actions and algebraic actions turn out to
be rich sources of examples of asymptotically h-expansiveness being
non-expansive. This is joint work with Guo Hua Zhang.
Angelegt am Tuesday, 15.10.2013 14:31 von Elke Enning
Geändert am Wednesday, 04.12.2013 12:23 von Elke Enning
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