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Necessary and sufficient conditions for a maximal ergodic theorem along subsequences

Published online by Cambridge University Press:  19 September 2008

Roger L. Jones
Roger L. Jones
Affiliation:
Department of Mathematics, DePaul University, Chicago, IL 60614, USA
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Abstract

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Let T be an ergodic measure preserving point transformation from a probability space X onto itself. Assume that is an increasing sequence of subsets of the positive integers. Conditions are given which are sufficient for the ergodic maximal function associated with these subsets to be weak type (p, p). These conditions are shown to be both necessary and sufficient for a larger two-sided maximal function. The conditions are in the form of covering lemmas for the integers.

Type
Research Article
Information
Ergodic Theory and Dynamical Systems , Volume 7 , Issue 2 , June 1987 , pp. 203 - 210
Copyright
Copyright © Cambridge University Press 1987

References

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