中文

随机递归:介于 Kesten 假设与 Grincevičius-Grey 假设之间

概率论 2020-12-16 v3

摘要

我们研究随机递归 Xn=Ψn(Xn1)X_n=\Psi_n(X_{n-1}),其中 (Ψn)n1(\Psi_n)_{n\geq 1} 是一列独立同分布的随机 Lipschitz 映射,且接近于随机仿射变换 xAx+Bx\mapsto Ax+B。在假设存在 α>0\alpha>0 使得 EAα=1\mathbb{E} |A|^{\alpha}=1BB 的尾部以指数 α<0-\alpha<0 正则变化的情况下,我们描述了平稳解 XX 的尾部行为。当 Ψ(x)=Ax+B\Psi(x)=Ax+B 时,我们还得到了 XX 尾部的二阶渐近。

关键词

引用

@article{arxiv.1701.02625,
  title  = {Stochastic recursions: between Kesten's and Grincevi\v{c}ius-Grey's assumptions},
  author = {Ewa Damek and Bartosz Kołodziejek},
  journal= {arXiv preprint arXiv:1701.02625},
  year   = {2020}
}

备注

31 pages. Presentation of results and the whole manuscript have been reworked substantially. Part of the previous version of manuscript was moved to arXiv:1812.04496 (Electron. Commun. Probab. 23 (2018))