Israel Journal of Mathematics

, Volume 33, Issue 3, pp 198–224

Mixing properties of Markov operators and ergodic transformations, and ergodicity of cartesian products

Authors

  • Jonathan Aaronson
    • University of Rennes
    • Ben Gurion University of the Negev
    • The Hebrew University of Jerusalem
  • Michael Lin
    • University of Rennes
    • Ben Gurion University of the Negev
    • The Hebrew University of Jerusalem
  • Benjamin Weiss
    • University of Rennes
    • Ben Gurion University of the Negev
    • The Hebrew University of Jerusalem
Article

DOI: 10.1007/BF02762161

Cite this article as:
Aaronson, J., Lin, M. & Weiss, B. Israel J. Math. (1979) 33: 198. doi:10.1007/BF02762161

Abstract

LetT be a Markov operator onL1(X, Σ,m) withT*=P. We connect properties ofP with properties of all productsP ×Q, forQ in a certain class: (a) (Weak mixing theorem)P is ergodic and has no unimodular eigenvalues ≠ 1 ⇔ for everyQ ergodic with finite invariant measureP ×Q is ergodic ⇔ for everyuL1 with∝ udm=0 and everyfL we haveN−1Σn≠1/N|<u, Pnf>|→0. (b) For everyuL1 with∝ udm=0 we have ‖Tnu‖1 → 0 ⇔ for every ergodicQ, P ×Q is ergodic. (c)P has a finite invariant measure equivalent tom ⇔ for every conservativeQ, P ×Q is conservative. The recent notion of mild mixing is also treated.

Copyright information

© Hebrew University 1979