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A minimum principle for Lyapunov exponents and a higher-dimensional version of a theorem of Mañé

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Abstract

We consider compact invariant sets Λ forC 1 maps in arbitrary dimension. We prove that if Λ contains no critical points then there exists an invariant probability measure with a Lyapunov exponent λ which is theminimum of all Lyapunov exponents for all invariant measures supported on Λ. We apply this result to prove that Λ isuniformly expanding if every invariant probability measure supported on Λ is hyperbolic repelling. This generalizes a well known theorem of Mañé to the higher-dimensional setting.

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Correspondence to Yongluo Cao.

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The authors acknowledge the hospitality of Imperial College London where this work was carried out. They also thank Jaroslav Stark for several useful comments on a previous version of the paper and for pointing out several relevant references.

partially supported by NSF (10071055) and SFMSBRP of China and The Royal Society

partially supported by CAPES and FAPERJ (Brazil)

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Cao, Y., Luzzatto, S. & Rios, I. A minimum principle for Lyapunov exponents and a higher-dimensional version of a theorem of Mañé. Qual. Th. Dyn. Syst 5, 261–273 (2004). https://doi.org/10.1007/BF02972681

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