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Ergodic optimization aims to describe dynamically invariant probability measures that maximize the integral of a given function. The Dyck and Motzkin shifts are well-known examples of transitive subshifts over a finite alphabet that are not…

Dynamical Systems · Mathematics 2024-07-01 Mao Shinoda , Hiroki Takahasi , Kenichiro Yamamoto

We classify mapping class group invariant probability measures on the character varieties of Deroin-Tholozan representations, namely the compact components of relative $\mathrm{PSL}_2\mathbb{R}$-character varieties. We prove that an ergodic…

Dynamical Systems · Mathematics 2026-05-05 Yohann Bouilly , Arnaud Maret

We study a compactification of the space of invariant probability measures for a transitive countable Markov shift. We prove that it is affine homeomorphic to the Poulsen simplex. Furthermore, we establish that, depending on a combinatorial…

Dynamical Systems · Mathematics 2025-03-14 Godofredo Iommi , Anibal Velozo

Since the work of Ornstein and Weiss in 1987 (J. Analyse Math. 48 (1987)) it has been understood that the natural category for classical ergodic theory would be probability measure preserving actions of discrete amenable groups. A…

Dynamical Systems · Mathematics 2007-05-23 Daniel J. Rudolph

This paper proves various results concerning non-ergodic actions of locally compact groups and particularly Borel cocycles defined over such actions. The general philosophy is to reduce the study of the cocycle to the study of its…

Dynamical Systems · Mathematics 2007-05-23 D. Fisher , D. Morris , K. Whyte

We classify invariant probability measures for non-elementary groups of automorphisms, on any compact K\"ahler surface X, under the assumption that the group contains a so-called "parabolic automorphism". We also prove that except in…

Dynamical Systems · Mathematics 2022-02-10 Serge Cantat , Romain Dujardin

We prove that ergodic measures on one-sided shift spaces are uniformly scaling in the sense of Gavish. That is, given a shift ergodic measure we prove that at almost every point the scenery distributions weakly converge to a common…

Dynamical Systems · Mathematics 2017-03-30 Jonathan M. Fraser , Mark Pollicott

Let $F$ be a non-discrete non-Archimedean locally compact field such that the characteristic $\mathrm{ch}(F)\ne 2$ and let $\mathcal{O}_F$ be the ring of integers in $F$. The main results of this paper are Theorem 1.2 that classifies…

Dynamical Systems · Mathematics 2016-06-03 Yanqi Qiu

Among the ergodic actions of a compact quantum group $\mathbb{G}$ on possibly non-commutative spaces, those that are {\it embeddable} are the natural analogues of actions of a compact group on its homogeneous spaces. These can be realized…

Quantum Algebra · Mathematics 2017-08-23 Alexandru Chirvasitu , Souleiman Omar Hoche

Let $K$ be a compact metrizable group and $\Ga$ be a group of automorphisms of $K$. We first show that each $\ap \in \Ga$ is distal on $K$ implies $\Ga$ itself is distal on $K$, a local to global correspondence provided $\Ga$ is a…

Dynamical Systems · Mathematics 2007-05-23 C. R. E. Raja

We present a complete characterization of the metric compactification of $L_{p}$ spaces for $1\leq p < \infty$. Each element of the metric compactification of $L_{p}$ is represented by a random measure on a certain Polish space. By way of…

Functional Analysis · Mathematics 2022-06-01 Armando W. Gutiérrez

We prove a pointwise ergodic theorem and a maximal inequality for actions of amenable groups on noncommutative measure spaces. To do so, we establish a square function estimate quantifying the difference between ergodic averages and some…

Operator Algebras · Mathematics 2025-08-29 Léonard Cadilhac , Simeng Wang

We study several properties of expansive group actions on metric spaces and obtain relation between expansivity for subgroup and group actions. Through counter examples necessity of hypothesis are justified. We also study expansivity of…

Dynamical Systems · Mathematics 2018-08-01 Ali Barzanouni , Mahin Sadat Divandar , Ekta Shah

We extend some properties of random walks on hyperbolic groups to random walks on convergence groups. In particular we prove that if a convergence group $G$ acts on a compact metrizable space $M$ with the convergence property then we can…

Geometric Topology · Mathematics 2020-06-16 Aitor Azemar

We show that the inverse limit and the orbit map commute for actions of compact groups on compact Hausdorff spaces.

General Topology · Mathematics 2011-07-07 Mahender Singh

We prove that certain Gibbs measures on subshifts of finite type are nonsingular and ergodic for certain countable equivalence relations, including the orbit relation of the adic transformation (the same as equality after a permutation of…

Dynamical Systems · Mathematics 2016-09-06 Karl Petersen , Klaus Schmidt

This paper studies ergodic properties of certain measures arising in the dynamics of holomorphic correspondences. These measures, in general, are not invariant in the classical sense of ergodic theory. We define a notion of ergodicity, and…

Dynamical Systems · Mathematics 2024-12-11 Mayuresh Londhe

Ergodic properties of rational maps are studied, generalising the work of F.\ Ledrappier. A new construction allows for simpler proofs of stronger results. Very general conformal measures are considered. Equivalent conditions are given for…

Dynamical Systems · Mathematics 2012-04-02 Neil Dobbs

We study dynamical systems acting on the path space of a stationary (non-simple) Bratteli diagram. For such systems we explicitly describe all ergodic probability measures invariant with respect to the tail equivalence relation (or the…

Dynamical Systems · Mathematics 2009-04-02 S. Bezuglyi , J. Kwiatkowski , K. Medynets , B. Solomyak

We show that for any co-amenable compact quantum group A=C(G) there exists a unique compact Hausdorff topology on the set EA of isomorphism classes of ergodic actions of G such that the following holds: for any continuous field of ergodic…

Operator Algebras · Mathematics 2009-09-29 Hanfeng Li