Lyapunov spectrum rigidity and simultaneous linearization for random Anosov diffeomorphisms

Fuente: arXiv
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Hauptverfasser: Brown, Aaron, Shi, Yi
Format: Preprint
Veröffentlicht: 2026
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author Brown, Aaron
Shi, Yi
author_facet Brown, Aaron
Shi, Yi
contents In this paper we study the Lyapunov spectrum rigidity for random walks of expanding maps on unit circle $\mathbb{S}^1$ and Anosov diffeomorphisms on $d$-torus $\mathbb{T}^d$. Let $ν$ be a probability supported on the set of expanding maps on $\mathbb{S}^1$ or a neighborhood of a generic Anosov automorphisms on $\mathbb{T}^d$. If the Lyapunov spectrum of the $ν$-stationary SRB-measure coincides with the Lyapunov spectrum of the algebraic action, then we can simultaneously linearize $ν$ almost every system to an affine action. Moreover, we prove the positive Lyapunov exponent rigidity for random walks of irreducible positive matrices acting on $\mathbb{T}^2$.
format Preprint
id arxiv_https___arxiv_org_abs_2601_04679
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Lyapunov spectrum rigidity and simultaneous linearization for random Anosov diffeomorphisms
Brown, Aaron
Shi, Yi
Dynamical Systems
In this paper we study the Lyapunov spectrum rigidity for random walks of expanding maps on unit circle $\mathbb{S}^1$ and Anosov diffeomorphisms on $d$-torus $\mathbb{T}^d$. Let $ν$ be a probability supported on the set of expanding maps on $\mathbb{S}^1$ or a neighborhood of a generic Anosov automorphisms on $\mathbb{T}^d$. If the Lyapunov spectrum of the $ν$-stationary SRB-measure coincides with the Lyapunov spectrum of the algebraic action, then we can simultaneously linearize $ν$ almost every system to an affine action. Moreover, we prove the positive Lyapunov exponent rigidity for random walks of irreducible positive matrices acting on $\mathbb{T}^2$.
title Lyapunov spectrum rigidity and simultaneous linearization for random Anosov diffeomorphisms
topic Dynamical Systems
url https://arxiv.org/abs/2601.04679