Poincaré recurrence for observations

Rousseau, Jérôme; Saussol, Benoît

doi:10.1090/S0002-9947-2010-05078-0

Poincaré recurrence for observations
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by Jérôme Rousseau and Benoît Saussol PDF

Trans. Amer. Math. Soc. 362 (2010), 5845-5859 Request permission

Abstract:

A high dimensional dynamical system is often studied by experimentalists through the measurement of a relatively low number of different quantities, called an observation. Following this idea and in the continuity of Boshernitzan’s work, for a measure preserving system we study Poincaré recurrence for the observation. The link between the return time for the observation and the Hausdorff dimension of the image of the invariant measure is considered. We prove that when the decay of correlations is super polynomial, the recurrence rates for the observations and the pointwise dimensions relative to the push-forward are equal.

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