Klueppelberg,Asmussen等研究了增量有有限负均值的随机游动上确界的密度的渐近性.该文则在Denisov等,程东亚和王岳宝的基础上,进一步研究了增量均值为负无穷的随机游动上确界的密度的渐近性.最后,为了说明常见重尾分布大多满足上述结果的条件,该文给出了一些分布族的性质.
Kliippelberg,Asmussen et al.obtained asymptotics for the density of the supremum of a random walk with a finite negative mean.While this paper further investigates the case of a random walk with negative infinite mean on the basis of Denisov et al.and Wang and Cheng.To illustrate that some common distributions satisfy the conditions of the obtained results,the authors discuss some properties of certain density classes.