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Ruelle inequality of folding type for \(C^{1+\alpha}\) maps. (English) Zbl 1421.37012

Summary: For all \(C^{1+\alpha}\) maps, we prove an inequality conjectured by Ruelle that the metric entropy is bounded from above by the folding entropy minus the sum of the negative Lyapunov exponents.

MSC:

37C40 Smooth ergodic theory, invariant measures for smooth dynamical systems
37A35 Entropy and other invariants, isomorphism, classification in ergodic theory
37D25 Nonuniformly hyperbolic systems (Lyapunov exponents, Pesin theory, etc.)
37D35 Thermodynamic formalism, variational principles, equilibrium states for dynamical systems
Full Text: DOI

References:

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