arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1104.0434math.PR
收藏

二叉树覆盖时间的一个精确估计

A sharp estimate for cover times on binary trees

Jian Ding, Ofer Zeitouni

摘要:

我们计算的覆盖时间的二叉树深度$n$(连续时间)随机游动的二阶校正,并显示概率接近1的$n$增加,$\sqrt{τ_{\mathrm{cov}}}=\sqrt{|E|}[\sqrt{2\log 2}\cdot n - {\log n}/{\sqrt{2\log 2}} + O((\log\logn)^8]$,从而表明,二阶校正不同于相应的树上的高斯自由场的最大值。

英文摘要:

We compute the second order correction for the cover time of the binary tree of depth $n$ by (continuous-time) random walk, and show that with probability approaching 1 as $n$ increases, $\sqrt{τ_{\mathrm{cov}}}=\sqrt{|E|}[\sqrt{2\log 2}\cdot n - {\log n}/{\sqrt{2\log 2}} + O((\log\logn)^8]$, thus showing that the second order correction differs from the corresponding one for the maximum of the Gaussian free field on the tree.

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。

↑