Authors: David Burguet
Publish Date: 2011/03/01
Volume: 186, Issue: 1, Pages: 191-236
Abstract
We prove that mathcalC2 surface diffeomorphisms have symbolic extensions ie topological extensions which are subshifts over a finite alphabet Following the strategy of Downarowicz and Maass Invent Math 176617–636 2009 we bound the local entropy of ergodic measures in terms of Lyapunov exponents This is done by reparametrizing Bowen balls by contracting maps in a approach combining hyperbolic theory and Yomdin’s theory
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