Diffeomorphisms with positive metric entropy

Avila, A.; Crovisier, S.; Wilkinson, A.

doi:10.1007/s10240-016-0086-4

Avila, A.^1,² ; Crovisier, S.³ ; Wilkinson, A.⁴

¹ CNRS, IMJ-PRG, UMR 7586, Univ. Paris Diderot, Sorbonne Paris Cité, Sorbonne Universités, UPMC Univ. Paris 06 75013 Paris France
² IMPA, Estrada Dona Castorina 110 Rio de Janeiro Brazil
³ CNRS, Laboratoire de Mathématiques d’Orsay, UMR 8628, Université Paris-Sud 11 91405 Orsay Cedex France
⁴ Department of Mathematics, University of Chicago 5734 S. University Avenue 60637 Chicago IL USA

Publications Mathématiques de l'IHÉS, Tome 124 (2016), pp. 319-347.

Résumé

We obtain a dichotomy for $C^{1}$ -generic, volume-preserving diffeomorphisms: either all the Lyapunov exponents of almost every point vanish or the volume is ergodic and non-uniformly Anosov (i.e. nonuniformly hyperbolic and the splitting into stable and unstable spaces is dominated). This completes a program first put forth by Ricardo Mañé.

MR Zbl

DOI : 10.1007/s10240-016-0086-4

Affiliations des auteurs :

Avila, A. ^{1, 2} ; Crovisier, S. ³ ; Wilkinson, A. ⁴

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     title = {Diffeomorphisms with positive metric entropy},
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Avila, A.; Crovisier, S.; Wilkinson, A. Diffeomorphisms with positive metric entropy. Publications Mathématiques de l'IHÉS, Tome 124 (2016), pp. 319-347. doi : 10.1007/s10240-016-0086-4. http://www.numdam.org/articles/10.1007/s10240-016-0086-4/

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