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arXiv 0912.3170math.DS
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斜扩张映射Gibbs测度维数的中心极限定理

Central limit theorem for dimension of Gibbs measures for skew expanding maps

Renaud Leplaideur, Benoit Saussol

摘要:

考虑了$d$维环面上的一类非共形扩张映射。对于Hölder势的平衡测度,我们证明了球测度的对数随半径趋于零而涨落的中心极限定理的一个类似定理。一个意想不到的结果是,当测度不是绝对连续时,那么半径为$\eps$的球中有一半的测度小于$\eps^δ$,一半的测度大于$\eps^δ$,其中$δ$是测度的豪斯多夫维数。我们首先表明,这个问题是等价的一些Birkhoff和的波动的研究。然后利用概率论中的一般结果作为弱不变原理和时间的随机变化得到了我们的主要定理。我们的方法也适用于共形排斥和公理A表面的超同态,并可能一类一维非均匀膨胀的映射。这些概括在本文的最后。

英文摘要:

We consider a class of non-conformal expanding maps on the $d$-dimensional torus. For an equilibrium measure of an Hölder potential, we prove an analogue of the Central Limit Theorem for the fluctuations of the logarithm of the measure of balls as the radius goes to zero. An unexpected consequence is that when the measure is not absolutely continuous, then half of the balls of radius $\eps$ have a measure smaller than $\eps^δ$ and half of them have a measure larger than $\eps^δ$, where $δ$ is the Hausdorff dimension of the measure. We first show that the problem is equivalent to the study of the fluctuations of some Birkhoff sums. Then we use general results from probability theory as the weak invariance principle and random change of time to get our main theorem. Our method also applies to conformal repellers and Axiom A surface diffeomorphisms and possibly to a class of one-dimensional non uniformly expanding maps. These generalizations are presented at the end of the paper.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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