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Ergodic theory via joinings / Eli Glasner

Auteur principal : Glasner, Eli, 1945-, AuteurType de document : MonographieCollection : Mathematical surveys and monographs, 101Langue : anglais.Pays : Etats Unis.Éditeur : Providence : American Mathematical Society, 2003Description : 1 vol. (XI-384 p.) ; 26 cmISBN : 0821833723.ISSN : 0885-4653.Bibliographie : Notes en fin de chapitre. Bibliogr. p. 369-377. Index.Sujet MSC : 37A15, Ergodic theory, General groups of measure-preserving transformations and dynamical systems
37A25, Ergodic theory, Ergodicity, mixing, rates of mixing
37A35, Ergodic theory, Entropy and other invariants, isomorphism, classification in ergodic theory
37A44, Ergodic theory, Relations between ergodic theory and number theory
37Bxx, Dynamical systems and ergodic theory - Topological dynamics
En-ligne : Zentralblatt | MathSciNet | AMS
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Notes en fin de chapitre. Bibliogr. p. 369-377. Index

This book introduces modern ergodic theory. It emphasizes a new approach that relies on the technique of joining two (or more) dynamical systems. This approach has proved to be fruitful in many recent works, and this is the first time that the entire theory is presented from a joining perspective.

Another new feature of the book is the presentation of basic definitions of ergodic theory in terms of the Koopman unitary representation associated with a dynamical system and the invariant mean on matrix coefficients, which exists for any acting groups, amenable or not. Accordingly, the first part of the book treats the ergodic theory for an action of an arbitrary countable group.

The second part, which deals with entropy theory, is confined (for the sake of simplicity) to the classical case of a single measure-preserving transformation on a Lebesgue probability space.

Topics treated in the book include:

The interface between topological dynamics and ergodic theory;
The theory of distal systems due to H. Furstenberg and R. Zimmer--presented for the first time in monograph form;
B. Host's solution of Rohlin's question on the mixing of all orders for systems with singular spectral type;
The theory of simple systems;
A dynamical characterization of Kazhdan groups;
Weiss's relative version of the Jewett-Krieger theorem;
Ornstein's isomorphism theorem;
A local variational principle and its applications to the theory of entropy pairs.

The book is intended for graduate students who have a good command of basic measure theory and functional analysis and who would like to master the subject. It contains many detailed examples and many exercises, usually with indications of solutions. It can serve equally well as a textbook for graduate courses, for independent study, supplementary reading, or as a streamlined introduction for non-specialists who wish to learn about modern aspects of ergodic theory. (source : AMS)

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