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arXiv 1202.5463math.PR
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增Lévy树值过程的退出时

Exit times for an increasing Lévy tree-valued process

Romain Abraham, Jean-François Delmas, Patrick Hoscheit

摘要:

利用树的随机点过程和嫁接过程,给出了由Abraham和Delmas引入的增树值过程的一个显式构造.这个随机点过程将被用于同伴论文研究记录过程的Lévy树。我们使用的泊松结构的增加树值过程的跳跃来描述其行为时,第一次的树增长高于给定的高度。我们还给出了这个退出时间和对应于树值过程第一个无限跳的上升时间的联合分布。

英文摘要:

We give an explicit construction of the increasing tree-valued process introduced by Abraham and Delmas using a random point process of trees and a grafting procedure. This random point process will be used in companion papers to study record processes on Lévy trees. We use the Poissonian structure of the jumps of the increasing tree-valued process to describe its behavior at the first time the tree grows higher than a given height. We also give the joint distribution of this exit time and the ascension time which corresponds to the first infinite jump of the tree-valued process.

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