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By using a combination of algebraic, geometric, and dynamical techniques, together with input from higher dimensional Diophantine approximation, we give a complete characterization of all linearly repetitive cut and project sets with…

Dynamical Systems · Mathematics 2017-02-15 Alan Haynes , Henna Koivusalo , James Walton

We prove mean and pointwise ergodic theorems for the action of a discrete lattice subgroup in a connected algebraic Lie group, on infinite volume homogeneous algebraic varieties. Under suitable necessary conditions, our results are…

Dynamical Systems · Mathematics 2012-05-22 Alexander Gorodnik , Amos Nevo

We present the foundational theory of condensed sets and basic condensed algebra after having introduced key concepts from category theory and homological algebra. In the later sections, we indicate the relevance of condensed mathematics to…

Category Theory · Mathematics 2025-04-01 Noa Bihlmaier , Nick Ruoff , Philipp Schmale

We prove that, for semi-invertible linear cocycles, Oseledets subspaces associated to ergodic measures may be approximated by Oseledets subspaces associated to periodic points.

Dynamical Systems · Mathematics 2019-05-23 Lucas Backes

In this manuscript, we consider finitely many maps, all of which are defined on a smooth compact measure space, with at least one map in the collection having degree strictly bigger than 1. Working with random dynamics generated by this…

Dynamical Systems · Mathematics 2025-08-26 Thirupathi Perumal , Shrihari Sridharan

In this article, we consider the ergodic optimization of the top Lyapunov exponent. We prove that there is a unique maximising measure of top Lyapunov expoent for typical matrix cocyles. By using the results we obtain, we prove that in any…

Dynamical Systems · Mathematics 2021-12-24 Wanshan Lin , Xueting Tian

The recent years have witnessed a growing interest for covariant Lyapunov vectors (CLVs) which span local intrinsic directions in the phase space of chaotic systems. Here we review the basic results of ergodic theory, with a specific…

Chaotic Dynamics · Physics 2015-06-12 Francesco Ginelli , Hugues Chate' , Roberto Livi , Antonio Politi

We present a simple way to produce good weights for several types of ergodic theorem including the Wiener-Wintner type multiple return time theorem and the multiple polynomial ergodic theorem. These weights are deterministic and come from…

Dynamical Systems · Mathematics 2014-05-01 Tanja Eisner

For linear random dynamical systems in a separable Banach space $X$, we derived a series of Krein-Rutman type Theorems with respect to co-invariant cone family with rank-$k$, which present a (quasi)-equivalence relation between the…

Dynamical Systems · Mathematics 2015-07-03 Zeng Lian , Yi Wang

We form a sequence of oblong matrices by evaluating an integrable vector-valued function along the orbit of an ergodic dynamical system. We obtain an almost sure asymptotic result for the permanents of those matrices. We also give an…

Dynamical Systems · Mathematics 2016-10-24 Jairo Bochi , Godofredo Iommi , Mario Ponce

Covariant Lyapunov vectors (CLVs) are intrinsic modes that describe long-term linear perturbations of solutions of dynamical systems. With recent advances in the context of semi-invertible multiplicative ergodic theorems, existence of CLVs…

Dynamical Systems · Mathematics 2021-07-26 Florian Noethen

In the framework of infinite ergodic theory, we derive equidistribution results for suitable weighted sequences of cusp points of Hecke triangle groups encoded by group elements of constant word length with respect to a set of natural…

Dynamical Systems · Mathematics 2024-02-08 Laura Breitkopf , Marc Kesseböhmer , Anke Pohl

We calculate a certain mean-value of meromorphic functions by using specific ergodic transformations, which we call affine Boolean transformations. We use Birkhoff's ergodic theorem to transform the mean-value into a computable integral…

Number Theory · Mathematics 2021-09-21 Junghun Lee , Ade Irma Suriajaya

It is known that, for a positive Dunford-Schwartz operator in a noncommutative $L^p$-space, $1\leq p<\infty$, or, more generally, in a noncommutative Orlicz space with order continuous norm, the corresponding ergodic averages converge…

Operator Algebras · Mathematics 2020-11-03 Vladimir Chilin , Semyon Litvinov

We present a unified approach to extensions of Bourgain's Double Recurrence Theorem and Bourgain's Return Times Theorem to integer parts of the Kronecker sequence, emphasizing stopping times and metric entropy. Specifically, we prove the…

Dynamical Systems · Mathematics 2025-01-14 Ben Krause

We construct a continuous linear cocycle over an expanding base dynamics for which the Lyapunov exponents of all ergodic invariant probability measures are small, except for one measure whose Lyapunov exponents are away from zero. The…

Dynamical Systems · Mathematics 2025-09-17 Jairo Bochi

This paper is concerned with the study of linear cocycles over uniformly ergodic Markov shifts on a compact space of symbols. We establish the joint H\"older continuity of the maximal Lyapunov exponent as a function of the cocycle and the…

Dynamical Systems · Mathematics 2022-12-02 Ao Cai , Marcelo Durães , Silvius Klein , Aline Melo

In this paper, we first prove the strong Birkhoff Ergodic Theorem for subharmonic functions with the irrational shift on the Torus. Then, it is applied to the analytic quasi-periodic Jacobi cocycles. We show that if the Lyapunov exponent of…

Dynamical Systems · Mathematics 2018-07-20 Kai Tao

We prove a von Neumann type ergodic theorem for averages of unitary operators arising from the Furstenberg-Poisson boundary representation (the quasi-regular representation) of any lattice in a non-compact connected semisimple Lie group…

Dynamical Systems · Mathematics 2016-09-20 Adrien Boyer , Gabriele Link , Christophe Pittet

In this paper we first obtain a formula of averaged Lyapunov exponents for ergodic Szego cocycles via the Herman-Avila-Bochi formula. Then using acceleration, we construct a class of analytic quasi-periodic Szego cocycles with uniformly…

Dynamical Systems · Mathematics 2013-04-03 Zhenghe Zhang