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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ergodic properties of skew products in infinite measure

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Author(s):
Cirilo, Patricia ; Lima, Yuri ; Pujals, Enrique
Total Authors: 3
Document type: Journal article
Source: Israel Journal of Mathematics; v. 214, n. 1, p. 43-66, JUL 2016.
Web of Science Citations: 0
Abstract

Let (a{''}broken vertical bar, A mu) be a shift of finite type with a Markov probability, and (Y, nu) a non-atomic standard measure space. For each symbol i of the symbolic space, let I broken vertical bar (i) be a non-singular automorphism of (Y, nu). We study skew products of the form (omega, y) a dagger broken vertical bar (sigma omega, I broken vertical bar(omega 0) (y)), where sigma is the shift map on (a{''}broken vertical bar, A mu). We prove that, when the skew product is recurrent, it is ergodic if and only if the I broken vertical bar (i) `s have no common non-trivial invariant set. In the second part we study the skew product when a{''}broken vertical bar = [0, 1](Z), A mu is a Bernoulli measure, and I broken vertical bar(0),I broken vertical bar(1) are R-extensions of a same uniquely ergodic probability-preserving automorphism. We prove that, for a large class of roof functions, the skew product is rationally ergodic with return sequence asymptotic to , and its trajectories satisfy the central, functional central and local limit theorem. (AU)

FAPESP's process: 11/11663-5 - Ergodic and algebraic properties for dynamical systems which preserves an infinite measure
Grantee:Patricia Romano Cirilo
Support Opportunities: Scholarships in Brazil - Post-Doctoral