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arXiv math/0509612math.PR
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局部调节分支种群的遍历行为

Ergodic behavior of locally regulated branching populations

M. Hutzenthaler, A. Wakolbinger

摘要:

对于一类过程建模的空间结构人口的迁移和繁殖动态的逻辑局部调节的演变,我们证明了收敛到一个上不变测度,从一个合适的类的初始分布。从艾莉森·埃瑟里奇最近的工作可以看出,这个上不变测度对于再现中足够大的超临界性是不平凡的。对于足够小的超临界性,我们证明了局部灭绝的平均场模型的比较。后一种结果也适用于更一般的地方生殖条例。

英文摘要:

For a class of processes modeling the evolution of a spatially structured population with migration and a logistic local regulation of the reproduction dynamics, we show convergence to an upper invariant measure from a suitable class of initial distributions. It follows from recent work of Alison Etheridge that this upper invariant measure is nontrivial for sufficiently large super-criticality in the reproduction. For sufficiently small super-criticality, we prove local extinction by comparison with a mean field model. This latter result extends also to more general local reproduction regulations.

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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