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The Lyapunov exponents of GL(2)-cocycles over Markov shifts depend continuously on the underlying data, that is, on the matrix coefficients and the Markov measure transition probabilities.

Dynamical Systems · Mathematics 2014-10-07 Elaís C. Malheiro , Marcelo Viana

We prove a conjecture of Viana which states that Lyapunov exponents vary continuously when restricted to $GL(2,\mathbb{R})$-valued cocycles over a subshift of finite type which admit invariant holonomies that depend continuously on the…

Dynamical Systems · Mathematics 2019-05-23 Lucas Backes , Aaron W. Brown , Clark Butler

In this paper we prove the continuity of all Lyapunov exponents, as well as the continuity of the Oseledets decomposition, for a class of irreducible cocycles over strongly mixing Markov shifts. Moreover, gaps in the Lyapunov spectrum lead…

Dynamical Systems · Mathematics 2015-07-13 Silvius Klein , Pedro Duarte

We establish (i) stability of Lyapunov exponents and (ii) convergence in probability of Oseledets spaces for semi-invertible matrix cocycles, subjected to small random perturbations. The first part extends results of Ledrappier and Young to…

Dynamical Systems · Mathematics 2013-10-10 Gary Froyland , Cecilia González-Tokman , Anthony Quas

We prove that, for semi-invertible continuous cocycles, continuity of Lyapunov exponents is equivalent to continuity, in measure, of Oseledets subspaces.

Dynamical Systems · Mathematics 2017-08-21 Lucas Backes , Mauricio Poletti

We prove that the Lyapunov exponents of random products in a (real or complex) matrix group depends continuously on the matrix coefficients and probability weights. More generally, the Lyapunov exponents of the random product defined by any…

Dynamical Systems · Mathematics 2023-05-11 Artur Avila , Alex Eskin , Marcelo Viana

We prove that a locally constant $SL_{2}(\mathbb{R})$-valued cocycle over the shift generated by an irreducible collection of matrices is a continuity point for Lyapunov exponents in the $\alpha$-H\"older topology for every $\alpha > 0$.…

Dynamical Systems · Mathematics 2019-11-28 Clark Butler

In this paper we establish uniform large deviations estimates of exponential type and H\"older continuity of the Lyapunov exponents for random non-invertible cocycles with constant rank.

Dynamical Systems · Mathematics 2022-10-27 Catalina Freijo , Pedro Duarte

We give examples of locally constant $SL(2,\mathbb{R})$-cocycles over a Bernoulli shift which are discontinuity points for Lyapunov exponents in the H\"older topology and are arbitrarily close to satisfying the fiber bunching inequality.…

Dynamical Systems · Mathematics 2016-09-28 Clark Butler

We exhibit an example of discontinuity point for the Lyapunov exponents as a function of the cocycle in the $\alpha$-H\"older topology. The linear cocycle taking values in $SL(2, \mathbb{R})$ is locally constant and defined over a Bernoulli…

Dynamical Systems · Mathematics 2026-02-03 Edhin Mamani , Raquel Saraiva

In this paper we establish a Bochi-Ma\~n\'e type dichotomy in the space of two dimensional, nonnegative determinant matrix valued, locally constant linear cocycles over a Bernoulli or Markov shift. Moreover, we prove that Lebesgue almost…

Dynamical Systems · Mathematics 2025-03-28 Pedro Duarte , Marcelo Durães , Tomé Graxinha , Silvius Klein

We give a new proof of E. Le Page's theorem on the Holder continuity of the first Lyapunov exponent in the class of irreducible Bernoulli cocycles. This suggests an algorithm to approximate the first Lyapunov exponent, as well as the…

Dynamical Systems · Mathematics 2017-04-06 Alexandre Baraviera , Pedro Duarte

We study the regularity of Lyapunov exponents for random linear cocycles taking values in $\Mat_m(\R)$ and driven by i.i.d. processes. Under three natural conditions - finite exponential moments, a spectral gap between the top two Lyapunov…

Dynamical Systems · Mathematics 2025-06-05 Pedro Duarte , Tomé Graxinha

It follows from Oseledec Multiplicative Ergodic Theorem that the Lyapunov-irregular set of points for which the Oseledec averages of a given continuous cocycle diverge has zero measure with respect to any invariant probability measure. In…

Dynamical Systems · Mathematics 2017-02-15 Xueting Tian

We present an example of a discontinuity point for the Lyapunov exponents when viewed as a function of the cocycle in a topology finer than the $C^0$-topology. The linear cocycle taking values in SL(2,R) is locally constant, defined over a…

Dynamical Systems · Mathematics 2026-04-14 Raquel Saraiva

We provide conditions which imply the continuity of the Lyapunov exponents for non-uniformly fiber-bunched cocycles in $SL(2,\mathbb{R})$. The main theorem is an extension of the result of Backes, Brown and Butler and gives a partial answer…

Dynamical Systems · Mathematics 2022-12-27 Catalina Freijo , Karina Marin

This works investigates the Lyapunov-Oseledets spectrum of transfer operator cocycles associated to one-dimensional random paired tent maps depending on a parameter $\epsilon$, quantifying the strength of the \emph{leakage} between two…

Dynamical Systems · Mathematics 2021-01-19 Cecilia González-Tokman , Anthony Quas

We consider linear cocycles over non-uniformly hyperbolic dynamical systems. The base system is a diffeomorphism $f$ of a compact manifold $X$ preserving a hyperbolic ergodic probability measure $\mu$. The cocycle $A$ over $f$ is Holder…

Dynamical Systems · Mathematics 2017-07-20 Boris Kalinin , Victoria Sadovskaya

Linear skew-product semidynamical systems generated by random systems of delay differential equations are considered, both on a space of continuous functions as~well as on a space of $p$-summable functions. The main result states that in…

Dynamical Systems · Mathematics 2020-02-20 Janusz Mierczyński , Sylvia Novo , Rafael Obaya

We prove two continuity theorems for the Lyapunov exponents of the maximal entropy measure of polynomial automorphisms of $\mathbb{C}^2$. The first continuity result holds for any family of polynomial automorphisms of constant dynamical…

Dynamical Systems · Mathematics 2007-05-23 Romain Dujardin
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