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arXiv 1003.2122math.PR
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Levy过程的右逆:一般情况下的漂移测度

Right inverses of Levy processes: the excursion measure in the general case

Mladen Savov, Matthias Winkel

摘要:

本文是关于对称情形下Levy过程的右逆的研究。在这里,我们添加到现有的波动理论的明确描述的偏移措施远离(最小)的右逆。这种描述统一了已知的公式的情况下,一个积极的高斯系数和有界变差的情况下。虽然这些已知的公式涉及从连续地开始为负的点开始的偏移,以及由跳跃开始的偏移,但是本说明书是关于从上确界继续直到返回时间的偏移。在无界变化的情况下,零高斯系数先前排除,偏移开始连续负,但偏移措施远离右逆和远离一个点是相互奇异的。给出了最小右逆的Laplace指数的一个新的构造和一个新的计算公式。

英文摘要:

This article is about right inverses of Levy processes as first introduced by Evans in the symmetric case and later studied systematically by the present authors and their co-authors. Here we add to the existing fluctuation theory an explicit description of the excursion measure away from the (minimal) right inverse. This description unifies known formulas in the case of a positive Gaussian coefficient and in the bounded variation case. While these known formulas relate to excursions away from a point starting negative continuously, and excursions started by a jump, the present description is in terms of excursions away from the supremum continued up to a return time. In the unbounded variation case with zero Gaussian coefficient previously excluded, excursions start negative continuously, but the excursion measures away from the right inverse and away from a point are mutually singular. We also provide a new construction and a new formula for the Laplace exponent of the minimal right inverse.

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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