arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.00678math.PR
收藏

具有规则变化Lévy测度的Lévy驱动空间随机场的极值

Extremes of Lévy-driven spatial random fields with regularly varying Lévy measure

Anders Rønn-Nielsen, Mads Stehr

摘要:

我们考虑一个由$\mathbb{R}^d$表示的无限可分随机场,$d\in\mathbb{N}$,它是一个核函数关于一个Lévy基的积分,Lévy测度具有一个规则变化的右尾.首先,我们证明了在任何有界集上的上确界的尾部渐近等价于Lévy测度的右尾部乘以核的积分。其次,当观察一个适当增加的连续指标集序列上的域时,我们得到一个极值定理,说明运行上确界按分布收敛到Fréchet分布。

英文摘要:

We consider an infinitely divisible random field indexed by $\mathbb{R}^d$, $d\in\mathbb{N}$, given as an integral of a kernel function with respect to a Lévy basis with a Lévy measure having a regularly varying right tail. First we show that the tail of its supremum over any bounded set is asymptotically equivalent to the right tail of the Lévy measure times the integral of the kernel. Secondly, when observing the field over an appropriately increasing sequence of continuous index sets, we obtain an extreme value theorem stating that the running supremum converges in distribution to the Fréchet distribution.

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。

↑