The distribution of the supremum for spectrally asymmetric Lévy processes

The distribution of the supremum for spectrally asymmetric Lévy processes
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谱不对称 Lévy 过程的上界分布

DOI:
10.1214/ecp.v20-2999
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发表时间:
2014
影响因子:
0.5
通讯作者:
M. Pistorius
M. Pistorius
中科院分区:
数学4区
文献类型:
--
作者:
Z. Michna;Z. Palmowski;M. Pistorius

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在本文中,我们推导了概率$\mathbb{P}(\sup_{t\leq T}X(T)>u)$,$T>0$和$\mathbb{P}(\sup_{u)$的公式,其中$X$是无限变化的谱正Levy过程。这些公式是著名的具有非负增量和可互换增量的随机过程的Takacs公式的推广。此外,我们还得到了$inf_{t\leq T}Y(T)$和$Y(T)$的联合分布,其中$Y$是谱负的Levy过程。
In this article we derive formulas for the probability $\mathbb{P}(\sup_{t\leq T} X(t)>u)$, $T>0$ and $\mathbb{P}(\sup_{t u)$ where $X$ is a spectrally positive Levy process with infinite variation. The formulas are generalizations of the well-known Takacs formulas for stochastic processes with non-negative and interchangeable increments. Moreover, we find the joint distribution of $\inf_{t\leq T} Y(t)$ and $Y(T)$ where $Y$ is a spectrally negative Levy process.