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Bowen factors, their degree, and codings of surface diffeomorphisms. (arXiv:1807.04017v1 [math.DS])
来源于:arXiv
We show that symbolic finite-to-one extensions of the type constructed by O.
Sarig for surface diffeomorphisms induce H\"older-continuous conjugacies on
large sets, sometimes preserving transitivity. We deduce this from their Bowen
property. This notion, introduced in a joint work with M. Boyle, generalizes a
fact first observed by R. Bowen for Markov partitions. We use the notion of
degree from finite equivalence theory and magic word isomorphisms. As an
application, we improve Sarig's lower bound on the number of periodic points
for surface diffeomorphisms. Finally we characterize surface diffeomorphisms
admitting a H\"older-continuous coding of all their aperiodic hyperbolic
measures. 查看全文>>