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arXiv 1808.04261math.CO
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树指标随机游动的值域分布

On the Distribution of Range for Tree-Indexed Random Walks

Aaron Berger, Caleb Ji, Erik Metz

摘要:

我们研究了Benjamini、Häggström和Mossel提出的树索引随机游动,即一棵树的标号,其中邻顶点的标号相差1。这是一个猜想,这些作者的分布范围为任何这样的树是占主导地位的道路上相同数量的边缘。文献中考虑的该猜想的两个主要变体是$\textit{standard}$走线,其中邻顶点的标签必须相差$\textit{exactly}$ 1,以及$\textit{lazy}$走线,其中邻顶点的标签必须相差$\textit{at most}$ 1。我们确认这一猜想的所有树木在懒惰的情况下,并提供一些部分结果在标准的情况下。

英文摘要:

We study tree-indexed random walks as introduced by Benjamini, Häggström, and Mossel, i.e. labelings of a tree for which adjacent vertices have labels differing by 1. It is a conjecture of those authors that the distribution of the range for any such tree is dominated by that of a path on the same number of edges. The two main variants of this conjecture considered in the literature are the $\textit{standard}$ walks, in which adjacent vertices must have labels differing by $\textit{exactly}$ 1, and $\textit{lazy}$ walks, in which adjacent vertices must have labels differing by $\textit{at most}$ 1. We confirm this conjecture for all trees in the lazy case and provide some partial results in the standard case.

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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