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The Lyapunov exponents of locally constant GL(2;C)-cocycles over Bernoulli shifts depend continuously on the cocycle and on the invariant probability. The Oseledets decomposition also depends continuously on the cocycle, in measure.

Dynamical Systems · Mathematics 2010-12-07 Carlos Bocker-Neto , 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

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

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

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 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

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

It is shown that for the quasi-periodic cocycles in Gevrey space $G^{s}$ and subexponential Brjuno class frequency $\Omega(\eta)$, the Lyapunov exponent is continuous provided that $1<s+\eta<2$.

Dynamical Systems · Mathematics 2026-05-05 Xueyin Wang

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

A theorem of Viana says that almost all cocycles over any hyperbolic system have nonvanishing Lyapunov exponents. In this note we extend this result to cocycles on any noncompact classical semisimple Lie group.

Dynamical Systems · Mathematics 2016-12-01 Mario Bessa , Jairo Bochi , Michel Cambrainha , Carlos Matheus , Paulo Varandas , Disheng Xu

We consider Holder continuous GL(2,R)-valued cocycles over a transitive Anosov diffeomorphism. We give a complete classification up to Holder cohomology of cocycles with one Lyapunov exponent and of cocycles that preserve two transverse…

Dynamical Systems · Mathematics 2011-04-19 Victoria Sadovskaya

It is known that the Lyapunov exponent of analytic 1-frequency quasiperiodic cocycles is continuous in cocycle and, when the frequency is irrational, jointly in cocycle and frequency. In this paper, we extend a result of Bourgain to show…

Dynamical Systems · Mathematics 2022-10-18 Matthew Powell

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

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

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 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 show that typical (in the sense of Bonatti-Viana) H\"{o}lder and fiber-bunched $GL_d(\mathbb{R})$-valued cocycles over a subshift of finite type are uniformly quasi-multiplicative with respect to all singular value potentials. We prove…

Dynamical Systems · Mathematics 2020-03-18 Kiho Park

We prove that the Lyapunov exponent of quasi-periodic cocyles with singularities behaves continuously over the analytic category. We thereby generalize earlier results, where singularities were either excluded completely or constrained by…

Dynamical Systems · Mathematics 2011-09-16 S. Jitomirskaya , C. A. Marx

We classify the GL(2,R)-invariant subvarieties M in strata of Abelian differentials for which any two M-parallel cylinders have homologous core curves. This answers a question of Mirzakhani and Wright. As a corollary we show that outside of…

Dynamical Systems · Mathematics 2021-03-04 Paul Apisa

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
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