21 janvier 2019

Lundi 21 janvier 10:15-11:45 Ali Tahzibi (USP São Carlos, Brésil)
Measures of maximal entropy for flow type partially hyperbolic diffeomorphisms

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Lieu : salle 3L8

Résumé : In this talk we recall the Margulis construction of a measure of maximal entropy for mixing Anosov flows and generalize it to small C^1 perturbations. The main aim is to understand the number of measures of maximal entropy for partially hyperbolic diffeomorphisms close to time one maps of mixing Anosov flows. We have a partial picture of the fact, proving a dichotomy in terms of the central Lyapunov exponent : either there are exactly two ergodic measures of maximal entropy (with opposite sign of center exponent), or all maximal measures have zero exponent.
This is a joint work with Jérôme Buzzi and Todd Fisher.

Measures of maximal entropy for flow type partially hyperbolic diffeomorphisms  Version PDF

Lundi 21 janvier 14:00-15:00 Frédéric Naud (Laboratoire de Mathématiques d'Avignon)
Analyse Harmonique

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Lieu : IMO ; salle 3L8

Résumé : À venir

Analyse Harmonique  Version PDF