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arXiv 0805.4580math.DS
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距离扩展随机映射、热力学形式主义、吉布斯测度和分形几何

Distance Expanding Random Mappings, Thermodynamic Formalism, Gibbs Measures, and Fractal Geometry

Volker Mayer, Bartlomiej Skorulski, Mariusz Urbański

摘要:

本文定义了距离扩展随机动力系统。我们开发了适当的热力学形式主义,这样的系统。我们得到特别是不变的吉布斯态,适当的压力函数和指数快速收敛的迭代Perron Frobenius运营商的存在性和唯一性,特别是在指数衰减的相关性。我们还得到了压力函数的期望值的导数公式。接下来,我们定义并详细研究共形随机扩张排斥子。应用开发的机器的热力学形式主义,我们证明了一个版本的Bowen公式,它确定的豪斯多夫维数$h$的几乎所有的纤维与唯一的零的期望值的压力函数。然后,我们转向更精细的分形性质,首先,表明吉布斯态的多重分形形式主义是有效的,其次,$h$ -Hausdorff措施消失,而相应的包装措施是无限的系统是不是准确定性的。

英文摘要:

In this paper we define distance expanding random dynamical systems. We develop the appropriate thermodynamic formalism of such systems. We obtain in particular the existence and uniqueness of invariant Gibbs states, the appropriate pressure function and exponentially fast convergence of iterates of Perron-Frobenius operators resulting, in particular, in an exponential decay of correlations. We also obtain the formula for the derivative of the expected value of the pressure function. Next, we define and investigate in detail conformal random expanding repellers. Applying the developed machinery of thermodynamic formalism we prove a version of Bowen's formula which identifies the Hausdorff dimension $h$ of almost all fibers with the only zero of expected value of the pressure function. We then turn to more refined fractal properties by, firstly, showing that the multifractal formalism of the Gibbs states is valid and, secondly, that the $h$--Hausdorff measure vanishes while the corresponding packing measure is infinite provided the system is not quasi-deterministic.

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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