{ "id": "1707.04311", "version": "v1", "published": "2017-07-13T20:35:55.000Z", "updated": "2017-07-13T20:35:55.000Z", "title": "Pesin's Entropy Formula for $C^1$ non-uniformly expanding maps", "authors": [ "Vitor Araujo", "Felipe Santos" ], "comment": "49 pages, 5 figures, results from PhD thesis", "categories": [ "math.DS" ], "abstract": "We prove existence of equilibrium states with special properties for a class of distance expanding local homeomorphisms on compact metric spaces and continuous potentials. Moreover, we formulate a C$^1$ generalization of Pesin's Entropy Formula: for weak-expanding maps such that $\\Leb$-a.e $x$ has positive frequency of hyperbolic times, then all the necessarily existing ergodic SRB-like measures satisfy Pesin's Entropy Formula. It follows that the same holds for $C^1$ non-uniformly expanding maps. Furthermore, all the necessarily existing SRB-like measures are equilibrium states for the potential $\\psi=-\\log|\\det Df|$. In particular, this holds for any C$^1$-expanding map of finite dimensional compact Riemannian manifolds and in this case the set of invariant probability measures that satisfy Pesin's Entropy Formula is the weak$^*$-closed convex hull of the ergodic SRB-like measures. In this work no Markov structure is assumed.", "revisions": [ { "version": "v1", "updated": "2017-07-13T20:35:55.000Z" } ], "analyses": { "subjects": [ "37D25", "37D35", "37D20", "37C40" ], "keywords": [ "non-uniformly expanding maps", "satisfy pesins entropy formula", "dimensional compact riemannian manifolds", "measures satisfy pesins entropy", "ergodic srb-like measures satisfy" ], "tags": [ "dissertation" ], "note": { "typesetting": "TeX", "pages": 49, "language": "en", "license": "arXiv", "status": "editable" } } }