arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1102.1146math.PR
收藏

具有粉尘成分的λ聚结器

Lambda-coalescents with dust component

Alexander Gnedin, Alexander Iksanov, Alexander Marynych

摘要:

我们考虑了具有正单粒子团簇频率的双粒子合并过程。例如,重点关注的类别涵盖了测试版$(a,b)$ -与$a>1$合并。我们表明,这些过程的一些大样本性质可以通过耦合的聚结与一个不断增加的L{é}vy过程(从属),并通过利用与再生组合结构理论的平行。特别地,我们讨论了吸收时间和碰撞次数的极限分布。

英文摘要:

We consider the lambda-coalescent processes with positive frequency of singleton clusters. The class in focus covers, for instance, the beta$(a,b)$-coalescents with $a>1$. We show that some large-sample properties of these processes can be derived by coupling the coalescent with an increasing L{é}vy process (subordinator), and by exploiting parallels with the theory of regenerative composition structures. In particular, we discuss the limit distributions of the absorption time and the number of collisions.

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。

↑