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arXiv 1502.02831math.PR
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树上有偏随机游动的最多访问点

The most visited sites of biased random walks on trees

Yueyun Hu, Zhan Shi

摘要:

我们认为随机偏置的随机游动$(X_n)$的超临界高尔顿-沃森树的缓慢运动,并有兴趣的网站上的树是最有偏见的随机游动。我们的主要结果意味着退火措施下的最访问的网站的分布的紧密性。这与一维情形相反,据我们所知,它提供了零递归随机游动的第一个非平凡例子,其最多访问的站点不是瞬态的,这是Erdans和Révész [11]最初针对直线上的简单对称随机游动提出的问题。

英文摘要:

We consider the slow movement of randomly biased random walk $(X_n)$ on a supercritical Galton--Watson tree, and are interested in the sites on the tree that are most visited by the biased random walk. Our main result implies tightness of the distributions of the most visited sites under the annealed measure. This is in contrast with the one-dimensional case, and provides, to the best of our knowledge, the first non-trivial example of null recurrent random walk whose most visited sites are not transient, a question originally raised by Erdős and Révész [11] for simple symmetric random walk on the line.

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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