Abstract
We prove that, for a C 2 non-invertible but non-degenerate map on a compact Riemannian manifold without boundary, an invariant measure satisfies an equality relating entropy, folding entropy and negative Lyapunov exponents. This generalizes Ledrappier-Young’s entropy formula [5] (for negative Lyapunov exponents of diffeomorphisms) to the case of endomorphisms.
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Shu, L.: Dimension theory for invariant measures of endomorphisms. Manuscript
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Communicated by G. Gallavotti
This work is supported by National Basic Research Program of China (973 Program) (2007 CB 814800).
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Shu, L. The Metric Entropy of Endomorphisms. Commun. Math. Phys. 291, 491–512 (2009). https://doi.org/10.1007/s00220-009-0859-4
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DOI: https://doi.org/10.1007/s00220-009-0859-4