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AuthorCornfeld, I. P. author
TitleErgodic Theory [electronic resource] / by I. P. Cornfeld, S. V. Fomin, Ya. G. Sinai
ImprintNew York, NY : Springer New York, 1982
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Descript X, 486 p. online resource


Ergodic theory is one of the few branches of mathematics which has changed radically during the last two decades. Before this period, with a small number of exceptions, ergodic theory dealt primarily with averaging problems and general qualitative questions, while now it is a powerful amalgam of methods used for the analysis of statistical properties of dynaยญ mical systems. For this reason, the problems of ergodic theory now interest not only the mathematician, but also the research worker in physics, biology, chemistry, etc. The outline of this book became clear to us nearly ten years ago but, for various reasons, its writing demanded a long period of time. The main principle, which we adhered to from the beginning, was to develop the approaches and methods or ergodic theory in the study of numerous concrete examples. Because of this, Part I of the book contains the description of various classes of dynamical systems, and their elementary analysis on the basis of the fundamental notions of ergodicity, mixing, and spectra of dynamical systems. Here, as in many other cases, the adjective" elementary" ĩ not synonymous with "simple. " Part II is devoted to "abstract ergodic theory. " It includes the construcยญ tion of direct and skew products of dynamical systems, the Rohlin-Halmos lemma, and the theory of special representations of dynamical systems with continuous time. A considerable part deals with entropy


I Ergodicity and Mixing. Examples of Dynamic Systems -- 1 Basic Definitions of Ergodic Theory -- 2 Smooth Dynamical Systems on Smooth Manifolds -- 3 Smooth Dynamical Systems on the Torus -- 4 Dynamical Systems of Algebraic Origin -- 5 Interval Exchange Transformations -- 6 Billiards -- 7 Dynamical Systems in Number Theory -- 8 Dynamical Systems in Probability Theory -- 9 Examples of Infinite Dimensional Dynamical Systems -- II Basic Constructions of Ergodic Theory -- 10 Simplest General Constructions and Elements of Entropy Theory of Dynamical Systems -- 11 Special Representations of Flows -- III Spectral Theory of Dynamical Systems -- 12 Dynamical Systems with Pure Point Spectrum -- 13 Examples of Spectral Analysis of Dynamical Systems -- 14 Spectral Analysis of Gauss Dynamical Systems -- IV Approximation Theory of Dynamical Systems by Periodic Dynamical Systems and Some of its Applications -- 15 Approximations of Dynamical Systems -- 16 Special Representations and Approximations of Smooth Dynamical Systems on the Two-dimensional Torus -- Appendix 1 -- Lebesgue Spaces and Measurable Partitions -- Appendix 2 -- Relevant Facts from the Spectral Theory of Unitary Operators -- Appendix 3 -- Proof of the Birkhoff-Khinchin Theorem -- Appendix 4 -- Kronecker Sets -- Bibliographical Notes

Mathematics Probabilities Mathematics Probability Theory and Stochastic Processes


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