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arXiv 0709.2597math.DS
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二维扩展过程的定量递归性

Quantitative recurrence in two-dimensional extended processes

Françoise Pène, Benoit Saussol

摘要:

在较弱的条件下,平面上的随机游动是常返的。特别是每个轨迹是密集的,一个自然的问题是需要多少时间才能接近原点的一个给定的小邻域。我们解决这个问题的情况下,一些扩展的动力系统类似于平面随机游动,包括$\ZZ^2$ -扩展的双曲动力系统。我们定义了一个逐点递归率,并将其与过程的维数相联系,并建立了在原点附近的重新标度的返回时间的分布依分布收敛。

英文摘要:

Under some mild condition, a random walk in the plane is recurrent. In particular each trajectory is dense, and a natural question is how much time one needs to approach a given small neighborhood of the origin. We address this question in the case of some extended dynamical systems similar to planar random walks, including $\ZZ^2$-extension of hyperbolic dynamics. We define a pointwise recurrence rate and relate it to the dimension of the process, and establish a convergence in distribution of the rescaled return times near the origin.

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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