Alexander Arbieto, Carlos Matheus, Samuel Senti
In this note we construct measures of maximal entropy for a certain class of maps with critical points called Viana maps. The main ingredients of the proof are the non-uniform expansion features and the slow recurrence (to the critical set) of generic points with respect to the natural candidates for attaining the topological entropy.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
继续探索
We consider two examples of Viana maps for which the base dynamics has singularities (discontinuities or critical points) and show the existence of a unique absolutely continuous invariant probability measure and related ergodic properties such as stretched exponential decay of correlations and stretched exponential large deviations.
Building Expansion for Generalizations of Viana Maps
本文将Viana构造中底层的二次映射替换为具有更退化临界点的映射，从而扩展了具有两个正Lyapunov指数的映射例子。
Unique equilibrium states for Viana maps with small potentials
本文研究了Viana映射在小势下的平衡态存在性和唯一性，证明了其满足上层级2大偏差原理。
We study quadratic skew-products with parameters driven over piecewise expanding and Markov interval maps with countable many inverse branches, a generalization of the class of maps introduced by Viana. In particular we construct a class of multidimensional non-uniformly expanding attractors that exhibit both critical points and discontinuities and prove existence and uniqueness of an SRB measure with stretched-exponential decay of correlations, stretched-exponential large deviations and satisfying some limit laws. Moreover, generically such maps admit the coexistence of a dense subset of poin…
We prove that a Viana map with an arbitrarily non-constant real analytic coupling function admits two positive Lyapunov exponents almost everywhere.
Devaney and Krych showed that for the exponential family $λe^z$, where $0<λ<1/e$, the Julia set consists of uncountably many pairwise disjoint simple curves tending to $\infty$. Viana proved that these curves are smooth. In this article we consider a quasiregular counterpart of the exponential map, the so-called Zorich maps, and generalize Viana's result to these maps.
Criteria for the simplicity of the Lyapunov spectra of linear cocycles have been found by Furstenberg, Guivarc'h-Raugi, Gol'dsheid-Margulis and, more recently, Bonatti-Viana and Avila-Viana. In all the cases, the authors consider cocycles over hyperbolic systems, such as shift maps or Axiom A diffeomorphisms. In this paper we propose to extend such criteria to situations where the base map is just partially hyperbolic. This raises several new issues concerning, among others, the recurrence of the holonomy maps and the (lack of) continuity of the Rokhlin disintegrations of $u$-states. Our main …
We consider random perturbations of discrete-time dynamical systems. We give sufficient conditions for the stochastic stability of certain classes of maps, in a strong sense. This improves the main result in J. F. Alves, V. Araujo, Random perturbations of non-uniformly expanding maps, Asterisque 286 (2003), 25--62, where it was proved the convergence of the stationary measures of the random process to the SRB measure of the initial system in the weak* topology. Here, under slightly weaker assumptions on the random perturbations, we obtain a stronger version of stochastic stability: convergence…
Invariant Measures of Non-Uniformly Expanding Maps with Higher Order Critical Set
本文研究含高阶临界点的 Viana 型非一致扩张映射，证明其绝对连续不变测度的存在唯一性，并由此推出相关性超多项式衰减。
Equilibrium states for hyperbolic potentials via inducing schemes
本文针对可能含临界集的非均匀扩张映射，通过有限个马尔可夫诱导方案编码动力学，证明了双曲势存在有限多个遍历平衡态，推广了Ramos和Viana的结果，并应用于多维Viana映射。
Avila and Viana exhibit an explicit sufficient condition for the Lyapunov exponents of a linear cocycle over a Markov map to have multiplicity 1. Here, in terms of geometric perturbations, we prove that this sufficient criterion is generic in the space of all fiber bunched linear cocycles over Markov maps: the set of exceptional cocycles has infinite codimention, i.e. it is locally contained in finite unions of closed submanifolds with arbitrarily high codimension.
Maximal attractors for perturbations of unimodal maps near a homoclinic tangency
本文证明单峰映射族的小平面扰动在同宿切附近参数处存在极大吸引子，该结果适用于具特定双曲性质的一般单峰映射，推广了相关学者针对类Hénon族等的已有结果。
Measures of maximal entropy for non-uniformly hyperbolic maps
该研究探讨了非均匀超双曲映射中最大熵测度的唯一性和有限性，通过同宿类分析和多种不同模型的应用，证明了相关测度的有限性或唯一性。
We consider classes of dynamical systems admitting Markov induced maps. Under general assumptions, which in particular guarantee the existence of SRB measures, we prove that the entropy of the SRB measure varies continuously with the dynamics. We apply our result to a vast class of non-uniformly expanding maps of a compact manifold and prove the continuity of the entropy of the SRB measure. In particular, we show that the SRB entropy of Viana maps varies continuously with the map.
We establish bounds for the measure of deviation sets associated to continuous observables with respect to not necessarily invariant weak Gibbs measures. Under some mild assumptions, we obtain upper and lower bounds for the measure of deviation sets of some non-uniformly expanding maps, including quadratic maps and robust multidimensional non-uniformly expanding local diffeomorphisms. For that purpose, a measure theoretical weak form of specification is introduced and proved to hold for the robust classes of multidimensional nonuniformly expanding local diffeomorphisms and Viana maps.
We construct Markov partitions for non-invertible and/or singular nonuniformly hyperbolic systems defined on higher dimensional Riemannian manifolds. The generality of the setup covers classical examples not treated so far, such as geodesic flows in closed manifolds, multidimensional billiard maps, and Viana maps, and includes all the recent results of the literature. We also provide a wealth of applications.
Hyperbolicity of maximal entropy measures for certain maps isotopic to Anosov
证明了具有紧致二维中心叶理的环面部分双曲系统遍历极大熵测度的双曲性。
It was proven by Ures that $C^1$ diffeomorphism on three dimensional torus that is derived from Anosov admits a unique maximal measure. Here we show that the maximal measure has exponential decay of correlations for Hölder observables, assuming the middle eigenvalue of the linear Anosov model is contracting.
We construct measures of maximal $u$-entropy for any partially hyperbolic diffeomorphism that factors over an Anosov torus automorphism and has mostly contracting center direction. The space of such measures has a finite dimension, and its extreme points are ergodic measures with pairwise disjoint supports.
We construct a $C^r$ transformation of the interval (or the torus) which is topologically mixing but has no invariant measure of maximal entropy. Whereas the assumption of $C^{\infty}$ ensures existence of maximal measures for an interval map, it shows we cannot weaken the smoothness assumption. We also compute the local entropy of the example.
Compact locally maximal hyperbolic sets are studied via geometrically defined functional spaces that take advantage of the smoothness of the map in a neighborhood of the hyperbolic set. This provides a self-contained theory that not only reproduces all the known classical results but gives also new insights on the statistical properties of these systems.
We provide a natural canonical decomposition of postcritically finite rational maps with non-empty Fatou sets based on the topological structure of their Julia sets. The building blocks of this decomposition are maps where all Fatou components are Jordan disks with disjoint closures (Sierpiński maps), as well as those where any two Fatou components can be connected through a countable chain of Fatou components with common boundary points (crochet or Newton-like maps). We provide several alternative characterizations for our decomposition, as well as an algorithm for its effective computation. …
We show that time-one maps of transitive Anosov flows of compact manifolds are accumulated by diffeomorphisms robustly satisfying the following dichotomy: either all of the measures of maximal entropy are non-hyperbolic, or there are exactly two ergodic measures of maximal entropy, one with a positive central exponent and the other with a negative central exponent. We establish this dichotomy for certain partially hyperbolic diffeomorphisms isotopic to the identity whenever both of their strong foliations are minimal. Our proof builds on the approach developed by Margulis for Anosov flows wher…
We introduce two parametrized families of piecewise affine maps on $[0,1]^2$ and $[0,1]^3$, as generalizations of the heterochaos baker maps which were introduced and investigated in [Y. Saiki, H. Takahasi, J. A. Yorke, Nonlinearity, 34 (2021), 5744--5761] as minimal models of the unstable dimension variability in multidimensional dynamical systems. We show that natural coding spaces of these maps coincide with the Dyck system that has come from the theory of languages. Based on this coincidence, we start to develop a complementary analysis on their invariant measures. As a first attempt, we s…
We give a new type of sufficient condition for the existence of measures with maximal entropy for an interval map $f$, using some non-uniform hyperbolicity to compensate for a lack of smoothness of $f$. More precisely, if the topological entropy of a $C^1$ interval map is greater than the sum of the local entropy and the entropy of the critical points, then there exists at least one measure with maximal entropy. As a corollary, we obtain that any $C^r$ interval map $f$ such that $h_{\rm top}(f)>2\log\|f'\|_{\infty}/r$ possesses measures with maximal entropy.
For a class of piecewise hyperbolic maps in two dimensions, we propose a combinatorial definition of topological entropy by counting the maximal, open, connected components of the phase space on which iterates of the map are smooth. We prove that this quantity dominates the measure theoretic entropies of all invariant probability measures of the system, and then construct an invariant measure whose entropy equals the proposed topological entropy. We prove that our measure is the unique measure of maximal entropy, that it is ergodic, gives positive measure to every open set, and has exponential…
Rates of mixing for the measure of maximal entropy of dispersing billiard maps
本文研究有限视界色散台球映射最大熵测度的统计性质，在稍强的稀疏回归条件下证明其相关性至少多项式衰减并满足中心极限定理，且对有界复杂度台球桌给出超多项式衰减速率。
Livšic theorem asserts that, for Anosov diffeomorphisms/flows, a Lipschitz observable is a coboundary if all its Birkhoff sums on every periodic orbits are equal to zero. The transfer function is then Lipschitz. We prove a positive Livšic theorem which asserts that a Lipschitz observable is bounded from below by a coboundary if and only if all its Birkhoff sums on periodic orbits are non negative. The new result is that the coboundary can be chosen Lipschitz. The map is only assumed to be $C^1$ and hyperbolic, but not necessarily bijective nor transitive. We actually prove our main result in t…
Compactifications and measures for rational maps
研究最大熵测度在有理映射参数空间和模空间紧化中的扩展，证明其连续性并回答DeMarco的问题。
In this article we discuss relations between algebraic and dynamical properties of non-cyclic semigroups of rational maps.
We consider the map $T_{α,β}(x):= βx + α\mod 1$, which admits a unique probability measure of maximal entropy $μ_{α,β}$. For $x \in [0,1]$, we show that the orbit of $x$ is $μ_{α,β}$-normal for almost all $(α,β)\in[0,1)\times(1,\infty)$ (Lebesgue measure). Nevertheless we construct analytic curves in $[0,1)\times(1,\infty)$ along them the orbit of $x=0$ is at most at one point $μ_{α,β}$-normal. These curves are disjoint and they fill the set $[0,1)\times(1,\infty)$. We also study the generalized $β$-maps (in particular the tent map). We show that the critical orbit $x=1$ is normal with respect…
Measures of maximal entropy for Markovian dynamics on the Gehman dendrite
研究盖曼枝状图上特定传递动力系统，通过引入马尔可夫映射，用可数马尔可夫图编码动力学，利用相关准则控制最大熵测度存在性，给出任意给定系统的两个马尔可夫扰动，一个有唯一最大熵测度，一个没有。
Every finite horizon Sinai billiard map has a unique measure of maximal entropy
本文研究了有限时间辛恩尼亚德映射的最大熵测度存在性和唯一性，通过新的证明方法不依赖稀疏复发条件，证明了其唯一性。
We construct equilibrium states, including measures of maximal entropy, for a large (open) class of non-uniformly expanding maps on compact manifolds. Moreover, we study uniqueness of these equilibrium states, as well as some of their ergodic properties.
We consider the real dynamics of a two parameter family of plane birational maps, focusing especially on an open subset of parameter space on which the real and complex dynamics are in close agreement. On the complex side, we find a rational complex surface to which the maps extend in a well-defined fashion and then calculate the induced action on the Picard group of the surface. On the real side, we use the critical sets of the maps to produce a combinatorial model for the dynamics. By comparing the two points of view, we are able to code points in the real non-wandering set, describe the beh…
We studied topological and metric properties of the so-called interval translation maps (ITMs). For these maps, we introduced the maximal invariant measure and study its properties. Further, we study how the invariant measures depend on the parameters of the system. These results were illustrated by a simple example or a risk management model where interval translation maps appear~naturally.
On amenability and measure of maximal entropy for semigroups of rational maps: II
本文比较有理映射半群的动力学与代数性质，证明Day-von Neumann猜想版本，部分回答Sushkievich问题，并建立与Furstenberg $\ imes 2 \ imes 3$问题的联系，给出非例外多项式半群的粗糙版本。
Uniformization of tongues in Double Standard Map family and variation of maximal chaotic sets
研究双标准映射族中舌形区域，通过实解析一致化证明其单连通性，刻画了舌形区域内映射的最大混沌子集，并表明该最大混沌集的豪斯多夫维数在舌形区域内实解析变化。
We characterize two of the most studied non-uniform hyperbolicity conditions for rational maps, semi-hyperbolicity and the topological Collet-Eckmann condition, in terms of the maximal entropy measure. Using the same tools in the proof of these results we give an extension of a result of Carleson, Jones and Yoccoz, that semi-hyperbolicity characterizes those polynomial maps whose basin of attraction of infinity is a John domain, to rational maps having a completely invariant attracting basin.
The extended Hausdorff dimension spectrum of a conformal iterated function system is maximal
本文证明任意共形迭代函数系统的扩展 Hausdorff 维数谱是极大的，即所有不超过极限集维数的非负维数均可实现，关键步骤是证明 β-移位族极限集的维数连续依赖于 β。
Adapted Measures for Markov Interval Maps
为研究熵与适配性的关联，本文考察含单个奇点的马尔可夫区间映射，证明映射熵与奇点“强度”的关联条件决定最大熵测度是否适配该奇点，并指出 Hölder 条件下奇点回复性是非适配不变测度存在的必要条件。
We show that expanding toral endomorphisms, together with their respective Lebesgue measure are isomorphic to 1-sided Bernoulli shifts. This result is then extended to smooth perturbations of expanding toral endomorphisms, together with their respective measures of maximal entropy. Also we study group extensions of expanding toral endomorphisms and show that under certain, not too restrictive conditions on the extension cocycle, these skew products are 1-sided Bernoulli as well.
Let f be a dominant rational map of P^k such that there exists s <k, with lambda_s(f)>lambda_l(f) for all l. Under mild hypotheses, we show that, for A outside a pluripolar set of the group of automorphisms of P^k, the map f o A admits a hyperbolic measure of maximal entropy log(lambda_s(f)) with explicit bounds on the Lyapunov exponents. In particular, the result is true for polynomial maps hence for the homogeneous extension of f to P^{k+1}. This provides many examples where non uniform hyperbolic dynamics is established. One of the key tools is to approximate the graph of a meromorphic func…
We study the dynamics of meromorphic maps for a compact Kaehler manifold X. More precisely, we give a simple criterion that allows us to produce a measure of maximal entropy. We can apply this result to bound the Lyapunov exponents. Then, we study the particular case of a family of generic birational maps of P^k for which we construct the Green currents and the equilibrium measure. We use for that the theory of super-potentials. We show that the measure is mixing and gives no mass to pluripolar sets. Using the criterion we get that the measure is of maximal entropy. It implies finally that the…
Maximal subgroups of topological full groups arising from factor maps and subgroupoids
本文通过因子映射和宽开子群胚构造拓扑全群及其换位子群的最大子群，给出最大性判据，并应用于康托尔极小系统，产生 Grigorchuk-Vorobets 猜想中的划分稳定化子及顺从群中的最大子群例子。
Maximal stretch and Lipschitz maps on Riemannian manifolds of negative curvature
本文在负曲率黎曼流形上定义最大拉伸，研究其Mather集的结构，并与测地线层流和最佳Lipschitz映射理论建立联系。
In this paper we investigate the support of the unique measure of maximal entropy of complex Henon maps, J^*. The main question is whether this set is the same as the analogue of the Julia set, J.
The Chirikov standard map and the 2D Froeschlé map are investigated. A few thousand values of the Hurst exponent (HE) and the maximal Lyapunov exponent (mLE) are plotted in a mixed space of the nonlinear parameter versus the initial condition. Both characteristic exponents reveal remarkably similar structures in this space. A tight correlation between the HEs and mLEs is found, with the Spearman rank $ρ=0.83$ and $ρ=0.75$ for the Chirikov and 2D Froeschlé maps, respectively. Based on this relation, a machine learning (ML) procedure, using the nearest neighbor algorithm, is performed to reprodu…
On the Measure of Maximal Entropy for Finite Horizon Sinai Billiard Maps
本文针对有限视界 Sinai 台球映射提出拓扑熵定义 $h_*$，证明其与 Bowen 定义等价，并在稀疏回归条件下构造唯一且 Bernoulli 的最大熵测度，同时给出周期点数量的下界。
扫码添加微信好友，提出您的宝贵建议 👇
💡 备注请填写：网站反馈
发表机构由 AI 从论文文本抽取，如发现错误，欢迎反馈修正建议。