arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2402.09040math.PR
收藏

二维重尾分布的一种新方法

A new approach in two-dimensional heavy-tailed distributions

Dimitrios G. Konstantinides, Charalampos D. Passalidis

AI总结:

本文提出定义二维重尾分布的新方法,引入三类二维重尾分布并研究其闭包性质,推广至随机加权和,并应用于二维风险模型的破产概率渐近表达。

摘要:

我们考虑在二维重尾分布定义中的一种新方法。即,我们引入二维长尾分布、二维控制变化分布和二维一致变化分布的类别。接下来,我们定义关于二维卷积和联合最大和等价的闭包性质,以研究这些类别是否满足这些性质。进一步,我们在广义尾部渐近独立性下考察两个随机和的联合行为。随后,我们研究标量积和二维乘积卷积下的闭包性质,并利用这些结果将我们的主要结论推广到联合随机加权和的情形。我们的结果包含一些应用,其中我们建立了二维离散时间风险模型中破产概率的渐近表达式。

英文摘要:

We consider a new approach in the definition of two-dimensional heavy-tailed distributions. Namely, we introduce the classes of two-dimensional long-tailed, of twodimensional dominatedly varying and of two-dimensional consistently varying distributions. Next, we define the closure property with respect to two-dimensional convolution and to joint max-sum equivalence in order to study if they are satisfied by these classes. Further we examine the joint behavior of two random sums, under generalized tail asymptotic independence. Afterward we study the closure property under scalar product and two dimensional product convolution and by these results we extended our main result in the case of jointly randomly weighted sums. Our results contained some applications where we establish the asymptotic expression of the ruin probability in a two-dimensional discrete-time risk model.

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。

↑