arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1306.1492math.PRmath.FAmath.STstat.TH
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Levy过程:infinitesimal generator的Ito表示的长时间行为和卷积型形式

Levy processes: long time behavior and convolution-type form of the Ito representation of the infinitesimal generator

Lev Sakhnovich

摘要:

本文证明了Levy过程$X_t$的无穷小生成元$L$的Levy-Ito表示可以写成卷积形式.利用得到的卷积形式,我们构造了准势算符$B$。我们用$p(t,Δ)$表示过程$X_t$的样本保留在$0{\leq}τ{\leq}t$的域$Δ$内的概率(破产问题)。借助于算子$B$,我们找到了一个新的$p(t,Δ)$公式.该公式允许我们获得$p(t,Δ)$的长时间行为。

英文摘要:

In the present paper we show that the Levy-Ito representation of the infinitesimal generator $L$ for Levy processes $X_t$ can be written in a convolution-type form. Using the obtained convolution form we have constructed the quasi-potential operator $B$. We denote by $p(t,Δ)$ the probability that a sample of the process $X_t$ remains inside the domain $Δ$ for $0{\leq}τ{\leq}t$ (ruin problem). With the help of the operator $B$ we find a new formula for $p(t,Δ)$. This formula allows us to obtain long time behavior of $p(t,Δ)$.

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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