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Actions of Transfer Operators on the Set of Borel Probability Measures
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Actions of Transfer Operators on the Set of Borel Probability Measures

Sergey Bezuglyi and Palle E. T Jorgensen
Transfer Operators, Endomorphisms, and Measurable Partitions, pp.77-83
Lecture Notes in Mathematics, Springer International Publishing
06/22/2018
DOI: 10.1007/978-3-319-92417-5_6

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Abstract

Let (R, σ) be a transfer operator defined on the space of Borel functions ℱ(X,ℬ)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} $$\mathcal F(X, {\mathcal B})$$ \end{document}. The main theme of this chapter is the study of a dual action of R on the set of probability measures M1=M1(X,ℬ)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} $$M_1 = M_1(X, {\mathcal B})$$ \end{document}. As a matter of fact, a big part of our results in this chapter remains true for any sigma-finite measure on (X,ℬ)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} $$(X, {\mathcal B})$$ \end{document}, but we prefer to work with probability measures. The justification of this approach is contained in the results of Chap. 10.1007/978-3-319-92417-5_5 where we showed that the replacement of a measure by a probability measure does not affect the properties of R described in terms of measures. Our main assumption for this chapter is that the transfer operators R are normalized, that is R(1) = 1. In other chapters, we also used this assumption to prove some results.
invariant measures Normalized transfer operator Probability measures

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