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Uniform convergence rate for Birkhoff means of certain uniquely ergodic toral maps

Published online by Cambridge University Press:  06 October 2020

SILVIUS KLEIN*
Affiliation:
Departamento de Matemática, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Brazil (e-mail: [email protected])
XIAO-CHUAN LIU
Affiliation:
Instituto de Matemática e Estatística da Universidade de São Paulo, R. do Matão, 1010 - Vila Universitaria, São Paulo, Brazil (e-mail: [email protected])
ALINE MELO
Affiliation:
Departamento de Matemática, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Brazil (e-mail: [email protected])

Abstract

We obtain estimates on the uniform convergence rate of the Birkhoff average of a continuous observable over torus translations and affine skew product toral transformations. The convergence rate depends explicitly on the modulus of continuity of the observable and on the arithmetic properties of the frequency defining the transformation. Furthermore, we show that for the one-dimensional torus translation, these estimates are nearly optimal.

Type
Original Article
Copyright
© The Author(s), 2020. Published by Cambridge University Press

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