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research article

A Point is Normal for Almost All Maps beta x+ alpha mod 1 or Generalised beta-Transformations

Faller, Bastien  
•
Pfister, Charles-Edouard  
2009
Ergodic Theory and Dynamical Systems

We consider the map T-alpha,T-beta(x) := beta x + alpha mod 1, which admits a unique probability measure of maximal entropy. For x is an element of [0, 1], we show that the orbit of x is mu(alpha,beta)-normal for almost all (alpha, beta) is an element of [0, 1) x ( 1, infinity) (with respect to Lebesgue measure). Nevertheless, we construct analytic curves in [0, 1) x (1, infinity) along which the orbit of x = 0 is mu(alpha,beta)-normal at no more than one point. These curves are disjoint and fill the set [0, 1) x (1, infinity). We also study the generalized-transformations (in particular, the tent Map). We show that the critical orbit x = 1 is normal with respect to the measure of maximal entropy for almost all beta.

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Type
research article
DOI
10.1017/S0143385708000874
Web of Science ID

WOS:000270772000006

Author(s)
Faller, Bastien  
Pfister, Charles-Edouard  
Date Issued

2009

Publisher

Cambridge University Press

Published in
Ergodic Theory and Dynamical Systems
Volume

29

Start page

1529

End page

1547

Subjects

Piecewise Monotonic Transformations

•

Topological-Entropy

•

Turning-Point

•

Sets

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
GR-PF  
Available on Infoscience
December 16, 2008
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/32758
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