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arXiv 1607.07933math.PR
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完全图上具有随机恢复率和边权的接触过程

Contact processes with random recovery rates and edge weights on complete graphs

Xiaofeng Xue, Yu Pan

摘要:

本文研究了具有$n$顶点的完全图上具有随机恢复率和边权的接触过程。我们表明,该模型有一个临界值,这是成反比的产品的边缘权重的平均值和平均值的恢复率的倒数。在亚临界的情况下,该过程消亡之前的时刻与顺序$O(\log n)$与高概率为$n\rightarrow+\infty$。在超临界的情况下,该过程在一个时刻以高概率的顺序$\exp\{O(n)\}$存活为$n\rightarrow+\infty$。我们的证明的亚临界情况下的启发,在\cite{Har1978}中引入的图解法。我们的超临界情况下的证明的启发方法介绍了\cite{Pet2011},其中处理的情况下,接触过程是随机顶点权重。

英文摘要:

In this paper we are concerned with the contact process with random recovery rates and edge weights on complete graph with $n$ vertices. We show that the model has a critical value which is inversely proportional to the product of the mean of the edge weight and the mean of the inverse of the recovery rate. In the subcritical case, the process dies out before a moment with order $O(\log n)$ with high probability as $n\rightarrow+\infty$. In the supercritical case, the process survives at a moment with order $\exp\{O(n)\}$ with high probability as $n\rightarrow+\infty$. Our proof for the subcritical case is inspired by the graphical method introduced in \cite{Har1978}. Our proof for the supercritical case is inspired by approach introduced in \cite{Pet2011}, which deal with the case where the contact process is with random vertex weights.

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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