Mathematics – Dynamical Systems
Scientific paper
2010-08-19
Mathematics
Dynamical Systems
1 Figure
Scientific paper
For a nonlinear Anosov diffeomorphism of the 2-torus, we present examples of
measures so that the group of $\mu$-preserving diffeomorphisms is, up to
zero-entropy transformations, cyclic. For families of equilibrium states $\mu$,
we strengthen this to show that the group of $\mu$-preserving diffeomorphism is
virtually cyclic.
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