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Continuous-state branching processes, extremal processes and super-individuals

机译:连续状态分支过程,极值流程和超人物

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摘要

The long-term behavior of flows of continuous-state branching processes are characterized through subordinators and extremal processes. The extremal processes arise in the case of supercritical processes with infinite mean and of subcritical processes with infinite variation. The jumps of these extremal processes are interpreted as specific initial individuals whose progenies overwhelm the population. These individuals, which correspond to the records of a certain Poisson point process embedded in the flow, are called super-individuals. They radically increase the growth rate to +infinity in the supercritical case, and slow down the rate of extinction in the subcritical one.
机译:连续状态分支过程流动的长期行为是通过下级器和极值过程的特征。在具有无限平均值和具有无限变化的亚临界方法的超临界过程的情况下出现极值过程。这些极值过程的跳跃被解释为特定的初始个人,其后代压倒了人口。这些人对应于嵌入在流动中的某些泊松点过程的记录,称为超人物。它们在超临界壳体中从根本上提高到+无限远的生长速率,并减慢亚临界人中的灭绝速率。

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