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On the uniform hyperbolicity of some nonuniformly hyperbolic systems

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arxiv math/0111110 v1 pith:52UGNF3R submitted 2001-11-09 math.DS

On the uniform hyperbolicity of some nonuniformly hyperbolic systems

classification math.DS
keywords nonuniformlyhyperbolicdiffeomorphismsexpandinghyperbolicitysetssystemsuniform
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We give sufficient conditions for the uniform hyperbolicity of certain nonuniformly hyperbolic dynamical systems. In particular, we show that local diffeomorphisms that are nonuniformly expanding on sets of total probability are necessarily uniformly expanding. We also present a version of this result for diffeomorphisms with nonuniformly hyperbolic sets.

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