Every expanding measure has the nonuniform specification property

Oliveira, Krerley

doi:10.1090/S0002-9939-2011-10985-7

Every expanding measure has the nonuniform specification property
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by Krerley Oliveira

Proc. Amer. Math. Soc. 140 (2012), 1309-1320

DOI: https://doi.org/10.1090/S0002-9939-2011-10985-7

Published electronically: July 29, 2011

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Abstract:

Exploring abundance and nonlacunarity of hyperbolic times for endomorphisms preserving an ergodic probability with positive Lyapunov exponents, we obtain that there are periodic points of period growing sublinearly with respect to the length of almost every dynamical ball. In particular, we conclude that any ergodic measure with positive Lyapunov exponents satisfies the nonuniform specification property. As consequences, we (re)obtain estimates on the recurrence to a ball in terms of the Lyapunov exponents, and we prove that any expanding measure is the limit of Dirac measures on periodic points.

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