Superprocesses in a Brownian environment

Superprocesses in a Brownian environment
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布朗环境中的超级过程

DOI:
10.1098/rspa.2003.1242
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发表时间:
2004
期刊:
Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
影响因子:
--
通讯作者:
D. Crisan
D. Crisan
中科院分区:
--
文献类型:
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作者:
D. Crisan

文献摘要

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超过程是具有地理结构/运动和(中性)生殖行为的种群进化的理想化模型。在本文中,生殖行为,特别是后代的分布,是与一个外部过程(环境)。我们将这些超过程刻画为某些演化方程的唯一解。我们还证明,它们可以得到分支粒子系统的极限最小方差分支和更快的(非经典)分支率。
Superprocesses are idealized models for the evolution of a population with geographical structure/motion and (unisex) reproductive behaviour. In this paper, the reproductive behaviour, in particular the offspring distribution, is related to an exterior process (the environment). We characterize these superprocesses as the unique solution of certain evolution equations. We also prove that they can be obtained as limits of systems of branching particles with minimal variance branchings and faster (non–classical) branching rates.