Asymptotic solution of Bowen equation for perturbed potentials on shift spaces with countable states

Uniqueness of minimizer for countable Markov shifts and equidistribution of periodic points

For a finitely irreducible countable Markov shift and a potential with summable variations, we provide a condition on the associated pressure function which ensures that Bowen's Gibbs state, the equilibrium state, and the minimizer of the level-2 large deviations rate function are all unique and they coincide. From this, we deduce that all periodic points weighted with the potential equidistribute with respect to the Gibbs-equilibrium state as the periods tend to infinity. Applications are given to the Gauss map, and the Bowen-Series map associated with a finitely generated free Fuchsian group…

无吉布斯态的可数马尔可夫移位的2级大偏差原理

Level-2 large deviation principle for countable Markov shifts without Gibbs states

本文在无Bowen吉布斯态假设下，通过诱导充分条件保证周期构型Borel概率测度列的指数紧性，建立了单侧可数全移位的2级大偏差原理，并将其应用于Rényi映射连分数展开，得到对应大偏差原理及二次无理数的加权等分布结果。

Topological entropy of sets of generic points for actions of amenable groups

Let $G$ be a countable discrete amenable group which acts continuously on a compact metric space $X$ and let $μ$ be an ergodic $G-$invariant Borel probability measure on $X$. For a fixed tempered Følner sequence $\{F_n\}$ in $G$ with $\lim\limits_{n\rightarrow+\infty}\frac{|F_n|}{\log n}=\infty$, we prove the following variational principle: $$h^B(G_μ,\{F_n\})=h_μ(X,G),$$ where $G_μ$ is the set of generic points for $μ$ with respect to $\{F_n\}$ and $h^B(G_μ,\{F_n\})$ is the Bowen topological entropy (along $\{F_n\}$) on $G_μ$. This generalizes the classical result of Bowen in 1973.

Large Deviation Principles for countable Markov shifts

We establish the large deviation principle for a topological Markov shift over infinite alphabet which satisfies strong combinatorial assumptions called ``finite irreducibility'' or ``finite primitiveness''. More precisely, we assume the existence of a Gibbs state for a potential $ϕ$ in the sense of Bowen, and prove the level-2 Large Deviation Principles for the distribution of empirical means under the Gibbs state, as well as that of weighted periodic points and iterated pre-images. The rate function is written with the pressure and the free energy associated with the potential $ϕ$.

Local variational principle concerning entropy of a sofic group action

Recently Lewis Bowen introduced a notion of entropy for measure-preserving actions of countable sofic groups admitting a generating measurable partition with finite entropy; and then David Kerr and Hanfeng Li developed an operator-algebraic approach to actions of countable sofic groups not only on a standard probability space but also on a compact metric space, and established the global variational principle concerning measure-theoretic and topological entropy in this sofic context. By localizing these two kinds of entropy, in this paper we prove a local version of the global variational prin…

无穷图导引迭代函数系统的退化扰动

Degenerate perturbations of infinite graph-directed iterated function systems

研究非强连通无穷图导引迭代函数系统，给出极限集Hausdorff维数估计与Bowen型公式，并证明扰动系统维数收敛性，推广了有限图结果。