On some random walks driven by spread-out measures

On some random walks driven by spread-out measures
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关于由分散度量驱动的一些随机游走

DOI:
10.1017/9781316576571.017
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发表时间:
2013
期刊:
arXiv: Probability
影响因子:
--
通讯作者:
Tianyi Zheng
Tianyi Zheng
中科院分区:
--
文献类型:
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作者:
L. Saloff‐Coste;Tianyi Zheng

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设$G$是一个具有对称生成$% k $-元组$S$的群.让$|\cdot| $和$V$是相关的字长和容量增长函数。设$\nu$是一个概率测度,使得$% \nu(g)\simeq [(1+| G|)^2V(|G|)]^{-1}$。我们证明了如果$G$有多项式体积增长,则$\nu^{(n)}(e)\simeq V(\sqrt{n\log n})^{-1}$。我们还得到了其他分散的概率措施的分类估计。
Let $G$ be a finitely generated group equipped with a symmetric generating $% k $-tuple $S$. Let $|\cdot|$ and $V$ be the associated word length and volume growth function. Let $\nu$ be a probability measure such that $% \nu(g)\simeq [(1+|g|)^2V(|g|)]^{-1}$. We prove that if $G$ has polynomial volume growth then $\nu^{(n)}(e) \simeq V(\sqrt{n\log n})^{-1}$. We also obtain assorted estimates for other spread-out probability measures.