On Covering paths with 3 Dimensional Random Walk

On Covering paths with 3 Dimensional Random Walk
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用 3 维随机游走覆盖路径

DOI:
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发表时间:
2017
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通讯作者:
Y. Zhang
Y. Zhang
中科院分区:
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文献类型:
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作者:
Eviatar B. Procaccia;Y. Zhang

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在本文中,我们找到了一个概率的上界,$3$$维简单随机游动覆盖的最近邻路径连接0和一个$L_1$球的半径$N$的边界上的每个点。对于$dge 4$,在[5]中已经表明,这样的概率相对于$N$呈指数衰减。然而,对于$d=3$,相同的技术不适用,并且在本文中,我们获得了稍微弱的上界:$forall vareps>0,exists c_vareps>0,$Pleft({ m Trace}(mathcal{P})subseteq { m跟踪}IG({X_n}_{n=0}^inftyIG) 8)le expleft(-c_vareps Nlog^{-(1+ vareps)}(N) 八)。$$
In this paper we find an upper bound for the probability that a $3$ dimensional simple random walk covers each point in a nearest neighbor path connecting 0 and the boundary of an $L_1$ ball of radius $N$. For $dge 4$, it has been shown in [5] that such probability decays exponentially with respect to $N$. For $d=3$, however, the same technique does not apply, and in this paper we obtain a slightly weaker upper bound: $forall varepsilon>0,exists c_varepsilon>0,$ $$Pleft({ m Trace}(mathcal{P})subseteq { m Trace}ig({X_n}_{n=0}^inftyig) ight)le expleft(-c_varepsilon Nlog^{-(1+varepsilon)}(N) ight).$$