Rotation sets for random compositions of $\T$ homeomorphisms

We study cocycles of homeomorphisms of $\T$ in the isotopy class of the identity over shift spaces, using as a tool a novel definition of rotation sets inspired in the classical work of Miziurewicz and Zieman. We discuss different notions of rotation sets, for the full cocyle as well as for measures invariant by the shift dynamics on the base. We present some initial results on the shape of rotation sets, continuity of rotation sets for shift-invariant measures, and bounded displacements for irrotational cocyles, as well as a few interesting examples in an attempt to motive the development of the topic.

Publication Details

Journal
ArXiv.org
Published
2025-10-13
Primary Topic
Mathematical Dynamics and Fractals
Type
article
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article

Rotation sets for random compositions of $\T$ homeomorphisms

ArXiv.org
Mathematical Dynamics and Fractals
article

Rotation sets for random compositions of $\T$ homeomorphisms

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Abstract

We study cocycles of homeomorphisms of $\T$ in the isotopy class of the identity over shift spaces, using as a tool a novel definition of rotation sets inspired in the classical work of Miziurewicz and Zieman. We discuss different notions of rotation sets, for the full cocyle as well as for measures invariant by the shift dynamics on the base. We present some initial results on the shape of rotation sets, continuity of rotation sets for shift-invariant measures, and bounded displacements for irrotational cocyles, as well as a few interesting examples in an attempt to motive the development of the topic.

ArXiv.org
Openalex Percentile: Top 41%
Mathematical Dynamics and Fractals
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Rotation sets for random compositions of $\T$ homeomorphisms · ArXiv.org (2025) | TGRS Research Map | TGRS