Cutoff for Ramanujan graphs via degree inflation
Cutoff for Ramanujan graphs via degree inflation
复制标题
通过度数膨胀对拉马努金图进行截止
DOI:
10.1214/17-ecp72
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发表时间:
2017
影响因子:
0.5
通讯作者:
J. Hermon
中科院分区:
文献类型:
--
作者:
J. Hermon
Recently Lubetzky and Peres showed that simple random walks on a sequence of $d$-regular Ramanujan graphs $G_n=(V_n,E_n)$ of increasing sizes exhibit cutoff in total variation around the diameter lower bound $\frac{d}{d-2}\log_{d-1}|V_n| $. We provide a different argument under the assumption that for some $r(n) \gg 1$ the maximal number of simple cycles in a ball of radius $r(n)$ in $G_n$ is uniformly bounded in $n$.