{ "id": "1907.12950", "version": "v1", "published": "2019-07-30T13:59:18.000Z", "updated": "2019-07-30T13:59:18.000Z", "title": "Periodic points and measures for a class of skew products", "authors": [ "Maria Carvalho", "Sebastián A. Pérez" ], "comment": "1 figure", "categories": [ "math.DS" ], "abstract": "We consider the open set constructed by M. Shub in [42] of partially hyperbolic skew products on the space $\\mathbb{T}^2\\times \\mathbb{T}^2$ whose non-wandering set is not stable. We show that there exists an open set $\\mathcal{U}$ of such diffeomorphisms such that if $F_S\\in \\mathcal{U}$ then its measure of maximal entropy is unique, hyperbolic and, generically, describes the distribution of periodic points. Moreover, the non-wandering set of such an $F_S\\in \\mathcal{U}$ contains closed invariant subsets carrying entropy arbitrarily close to the topological entropy of $F_S$ and within which the dynamics is conjugate to a subshift of finite type. Under an additional assumption on the base dynamics, we verify that $F_S$ preserves a unique SRB measure, which is physical, whose basin has full Lebesgue measure and coincides with the measure of maximal entropy. We also prove that there exists a residual subset $\\mathcal{R}$ of $\\mathcal{U}$ such that if $F_S\\in \\mathcal{R}$ then the topological and periodic entropies of $F_S$ are equal, $F_S$ is asymptotic per-expansive, has a sub-exponential growth rate of the periodic orbits and admits a principal strongly faithful symbolic extension with embedding.", "revisions": [ { "version": "v1", "updated": "2019-07-30T13:59:18.000Z" } ], "analyses": { "subjects": [ "37D35", "37A35", "37D30", "37A05", "37A30" ], "keywords": [ "periodic points", "skew products", "invariant subsets carrying entropy", "strongly faithful symbolic extension", "carrying entropy arbitrarily close" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }