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arXiv 1609.09593math.PR
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一个连续状态多项式分支过程

A continuous-state polynomial branching process

Pei-Sen Li

摘要:

构造了一类具有吸收边界条件的随机积分方程的连续状态多项式分支过程,并证明了其路径唯一解的存在性。显式地计算了灭绝和爆炸概率以及平均灭绝和爆炸时间,这在经典分支情况下也是新的。给出了该过程在有限时间内熄灭或爆炸的充要条件。在临界或次临界的情况下,我们给出了从无穷远下降的过程的一个构造。最后,它表明,连续状态多项式分支过程自然出现的离散状态过程的序列的重新标度的限制。

英文摘要:

A continuous-state polynomial branching process is constructed as the pathwise unique solution of a stochastic integral equation with absorbing boundary condition. The extinction and explosion probabilities and the mean extinction and explosion times are computed explicitly, which are also new in the classical branching case. We present necessary and sufficient conditions for the process to extinguish or explode in finite times. In the critical or subcritical case, we give a construction of the process coming down from infinity. Finally, it is shown that the continuous-state polynomial branching process arises naturally as the rescaled limit of a sequence of discrete-state processes.

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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