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arXiv 2111.09409math.PR
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自相似可加Gamma过程的值域是标度不变的Poisson点过程

The range of a self-similar additive gamma process is a scale invariant Poisson point process

Jim Pitman, Zhiyi You

摘要:

证明了对于具有独立增量的非减自相似随机过程$T$,$T$的值域构成$σ$ -有限强度的Poisson点过程当且仅当$T(1)$的一维分布是Gamma型的.这是从一个一般的保持跳跃描述这样的过程$T$,并意味着已知的结果,即一个尺度不变的泊松点过程,强度$θx^{-1} dx$的连续点之间的间距是另一个尺度不变的泊松点过程具有相同的强度的点。

英文摘要:

It is shown that for a non-decreasing self-similar stochastic process $T$ with independent increments, the range of $T$ forms a Poisson point process with $σ$-finite intensity if and only if the one-dimensional distribution of $T(1)$ is of the gamma type. This follows from a general hold-jump description of such processes $T$, and implies the known result that the spacings between consecutive points of a scale invariant Poisson point process, with intensity $θx^{-1} dx$, are the points of another scale invariant Poisson point process with the same intensity.

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。

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