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Periodic point free homeomorphisms and irrational rotation factors

Part of: Low-dimensional dynamical systems

Published online by Cambridge University Press:  03 November 2020

ALEJANDRO KOCSARD
ALEJANDRO KOCSARD*
Affiliation:
IME – Universidade Federal Fluminense, Rua Prof. Marcos Waldemar de Freitas Reis, S/N Bloco H, 4∘ andar. 24.210-201, Gragoatá, Niterói, RJ, Brasil (e-mail: [email protected])
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Abstract

We provide a complete characterization of periodic point free homeomorphisms of the $2$ -torus admitting irrational circle rotations as topological factors. Given a homeomorphism of the $2$ -torus without periodic points and exhibiting uniformly bounded rotational deviations with respect to a rational direction, we show that annularity and the geometry of its non-wandering set are the only possible obstructions for the existence of an irrational circle rotation as topological factor. Through a very precise study of the dynamics of the induced $\rho $ -centralized skew-product, we extend and generalize considerably previous results of Jäger.

Keywords

low-dimensional dynamicstopological dynamicsrotation theorytopological factors

MSC classification

Primary: 37E45: Rotation numbers and vectors 37E10: Maps of the circle
Type
Original Article
Information
Ergodic Theory and Dynamical Systems , Volume 41 , Issue 10 , October 2021 , pp. 2946 - 2982
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Copyright
© The Author(s), 2020. Published by Cambridge University Press

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