arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.10186math.PR
收藏

变环境下临界Galton-Watson过程的Yaglom极限:一种概率方法

Yaglom's limit for critical Galton-Watson processes in varying environment: A probabilistic approach

Natalia Cardona-Tobón, Sandra Palau

摘要:

变化环境下的Galton-Watson过程是一个离散时间分支过程,其后代分布在各代之间是变化的。基于一个双脊分解技术,我们提供了一个概率的Yaglom型极限的家庭过程。结果表明,在临界情况下,一个适当的归一化的过程条件下,非灭绝收敛于分布的指数随机变量。最近,Kersting [{ \it J. Appl. Probab.} { \bf 57}(1),196- 220,2020]使用分析技术。

英文摘要:

A Galton-Watson process in varying environment is a discrete time branching process where the offspring distributions vary among generations. Based on a two-spine decomposition technique, we provide a probabilistic argument of a Yaglom-type limit for this family processes. The result states that, in the critical case, a suitable normalisation of the process conditioned on non-extinction converges in distribution to an exponential random variable. Recently, this result has been established by Kersting [{\it J. Appl. Probab.} {\bf57}(1), 196--220, 2020] using analytic techniques.

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。

↑