On the Hausdorff dimension of invariant measures of piecewise smooth circle homeomorphisms

Fuente: arXiv
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Autore principale: Trujillo, Frank
Natura: Preprint
Pubblicazione: 2022
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author Trujillo, Frank
author_facet Trujillo, Frank
contents We show that, generically, the unique invariant measure of a sufficiently regular piecewise smooth circle homeomorphism with irrational rotation number and zero mean nonlinearity (e.g., piecewise linear) has zero Hausdorff dimension. To encode this generic condition, we consider piecewise smooth homeomorphisms as generalized interval exchange transformations (GIETs) of the interval and rely on the notion of combinatorial rotation number for GIETs, which can be seen as an extension of the classical notion of rotation number for circle homeomorphisms to the GIET setting.
format Preprint
id arxiv_https___arxiv_org_abs_2210_16233
institution arXiv
publishDate 2022
record_format arxiv
spellingShingle On the Hausdorff dimension of invariant measures of piecewise smooth circle homeomorphisms
Trujillo, Frank
Dynamical Systems
We show that, generically, the unique invariant measure of a sufficiently regular piecewise smooth circle homeomorphism with irrational rotation number and zero mean nonlinearity (e.g., piecewise linear) has zero Hausdorff dimension. To encode this generic condition, we consider piecewise smooth homeomorphisms as generalized interval exchange transformations (GIETs) of the interval and rely on the notion of combinatorial rotation number for GIETs, which can be seen as an extension of the classical notion of rotation number for circle homeomorphisms to the GIET setting.
title On the Hausdorff dimension of invariant measures of piecewise smooth circle homeomorphisms
topic Dynamical Systems
url https://arxiv.org/abs/2210.16233