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arXiv 1603.07293math.PR
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均匀碎裂过程中最大的碎片

The largest fragment of a homogeneous fragmentation process

Andreas Kyprianou, Francis Lane, Peter Mörters

摘要:

我们发现,在均匀碎裂过程中,最大的碎片在时间$t$的大小为$e^{-t Φ'(\bar{p})}t^{-\frac32 (\log Φ)'(\bar{p})+o(1)},$,其中$Φ$是碎裂过程的Lévy指数,$\bar{p}$是方程$(\log Φ)'(\bar{p})=\frac1{1+\bar{p}}$的唯一解。我们认为,这一结果是一致的预测所产生的分类均匀的碎裂过程的相关随机场。

英文摘要:

We show that in homogeneous fragmentation processes the largest fragment at time $t$ has size $e^{-t Φ'(\bar{p})}t^{-\frac32 (\log Φ)'(\bar{p})+o(1)},$ where $Φ$ is the Lévy exponent of the fragmentation process, and $\bar{p}$ is the unique solution of the equation $(\log Φ)'(\bar{p})=\frac1{1+\bar{p}}$. We argue that this result is in line with predictions arising from the classification of homogeneous fragmentation processes as logarithmically correlated random fields.

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