On the arc-sine laws for Lévy processes

On the arc-sine laws for Lévy processes
复制标题

关于 Lévy 过程的反正弦定律

DOI:
10.2307/3215236
复制
发表时间:
1994
影响因子:
1
通讯作者:
M. Sharpe
M. Sharpe
中科院分区:
数学4区
文献类型:
--
作者:
R. Getoor;M. Sharpe

文献摘要

被引文献

相似文献

设X是真实的直线上的Lévy过程,Fc表示[0,1]上带参数c的广义反正弦律.则当t → ∞时,t-1 <$0 tP 0(XS> 0)ds → c是t-1 <$0 t1 {XS >0} ds按P0律收敛于Fc的充要条件.此外,P0(Xt > 0)= c(t > 0)是t-1 ≠ 0 t1 {Xs >0} ds在P0下有Fc律的充要条件.我们给出了这些结果的一个初等证明,并展示了如何从Lévy过程版本以一种简单的方式导出Spitzer随机游动定理。
Let X be a Lévy process on the real line, and let Fc denote the generalized arcsine law on [0, 1] with parameter c. Then t −1 ⨍0 t P 0(X s > 0) ds → c as t → ∞ is a necessary and sufficient condition for t —1 ⨍0 t 1{Xs >0} ds to converge in P 0 law to Fc. Moreover, P 0(Xt > 0) = c for all t > 0 is a necessary and sufficient condition for t —1 ⨍0 t 1{Xs >0} ds under P 0 to have law Fc for all t > 0. We give an elementary proof of these results, and show how to derive Spitzer's theorem for random walks in a simple way from the Lévy process version.