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arXiv 0912.4909math.PRmath.STstat.TH
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多代分支过程的Weak Convergence结果

Weak Convergence Results for Multiple Generations of a Branching Process

James Kuelbs, Anand N. Vidyashankar

摘要:

建立了临界和超临界分枝过程多代弱收敛的极限定理。这些结果自然出现时,处理联合渐近行为的泛函定义的几代这样的过程。我们的主要结果的应用包括一个功能的中心极限定理(CLT),一个Darling-Erdös结果,和极值过程的结果。我们的功能CLT的限制过程是一个无限维布朗运动的样本路径在无穷乘积空间$(C_0[0,1])^{\infty}$,积拓扑,或在Banach子空间的$(C_0[0,1])^{\infty}$由规范相关的总体规模的分布的分支过程。作为这个CLT的一个应用,我们得到了分支过程的各代加权和之比的一个中心极限定理,以及各代加权和的各种最大值的中心极限定理。Darling-Erdös的结果及其对极值分布的应用也包括无穷维极限定律。还包括CLT失败的一些分支过程示例。

英文摘要:

We establish limit theorems involving weak convergence of multiple generations of critical and supercritical branching processes. These results arise naturally when dealing with the joint asymptotic behavior of functionals defined in terms of several generations of such processes. Applications of our main result include a functional central limit theorem (CLT), a Darling-Erdös result, and an extremal process result. The limiting process for our functional CLT is an infinite dimensional Brownian motion with sample paths in the infinite product space $(C_0[0,1])^{\infty}$, with the product topology, or in Banach subspaces of $(C_0[0,1])^{\infty}$ determined by norms related to the distribution of the population size of the branching process. As an application of this CLT we obtain a central limit theorem for ratios of weighted sums of generations of a branching processes, and also to various maximums of these generations. The Darling-Erdös result and the application to extremal distributions also include infinite dimensional limit laws. Some branching process examples where the CLT fails are also included.

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