Orderings of the rationals and dynamical systems

Details Orderings of the rationals and dynamical systems Orderings of the rationals and dynamical systems

2008-05-14

arxiv.org/abs/0805.2178v1

Mathematics

Dynamical Systems

28 pages, 2 figures

Scientific paper

This paper is devoted to a systematic study of a class of binary trees encoding the structure of rational numbers both from arithmetic and dynamical point of view. The paper is divided into two parts. The first one is a critical review of rather standard topics such as Stern-Brocot and Farey trees and their connections with continued fraction expansion and the question mark function. In the second part we introduce a class of one-dimensional maps which can be used to generate the binary trees in different ways and study their ergodic properties. This also leads us to study some random processes (Markov chains and martingales) arising in a natural way in this context.

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