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arXiv 0706.3852math.PR
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随机种群模型中若干对偶关系的图形表示

Graphical Representation of some Duality Relations in Stochastic Population Models

Roland Alkemper, Martin Hutzenthaler

摘要:

我们导出了一个带有分支-合并粒子过程的重采样-选择模型的对偶性的统一随机图像(参见。http://www.ams.org/mathscinet-getitem? mr= MR 2123250)和Feller分支扩散与逻辑增长的自对偶性(cf.数学/0509612)。这两个对偶过程近似的粒子过程,这是向前和向后的过程中的图形表示。我们确定导致上述两个对偶的粒子过程的基本构件之间的对偶关系。

英文摘要:

We derive a unified stochastic picture for the duality of a resampling-selection model with a branching-coalescing particle process (cf. http://www.ams.org/mathscinet-getitem?mr=MR2123250) and for the self-duality of Feller's branching diffusion with logistic growth (cf. math/0509612). The two dual processes are approximated by particle processes which are forward and backward processes in a graphical representation. We identify duality relations between the basic building blocks of the particle processes which lead to the two dualities mentioned above.

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