J4 ›› 2012, Vol. 50 ›› Issue (05): 912-916.

• 数学 • 上一篇    下一篇

截断和乘积的不变原理

周蕊1, 杨金英2   

  1. 1. 长春理工大学 理学院, 长春 130022|2. 呼伦贝尔学院 数学科学学院, 内蒙古 海拉尔 021008
  • 收稿日期:2012-02-29 出版日期:2012-09-26 发布日期:2012-09-29
  • 通讯作者: 杨金英 E-mail:yingzwy@yahoo.com.cn

Invariance Principle for the Product of Trimmed Sums

ZHOU Rui1, YANG Jinying2   

  1. 1. College of Science, Changchun University of Science and Technology, Changchun 130022, China;2. School of Mathematics Sciences, College of Hulunbeir, Hailaer 021008, Inner Mongolia Autonomous Region, China
  • Received:2012-02-29 Online:2012-09-26 Published:2012-09-29
  • Contact: YANG Jinying E-mail:yingzwy@yahoo.com.cn

摘要:

设{Xn,n≥1}为独立同分布的正平方可积随机变量
序列, 其共同分布为连续的中尾分布. 对于固定的常数a>0, 令Sn=∑〖DD(〗n〖〗i=1
〖DD)〗Xi, Mn=max〖DD(〗〖〗1≤i≤n〖DD)〗 Xi, Sn(a)=∑〖DD(〗n
〖〗i=1〖DD)〗XiI{Mn-a 定理和连续映射定理证明了截断和乘积的不变原理.

关键词: 截断和, 不变原理, 中尾分布, 独立同分布

Abstract:

Let {Xn,n≥1} be a sequence of i.i.d., positive sq
uare integrable random variables with continuous medium tailed distribution func
tion. For a fixed constant a>0, let Sn=∑〖DD(〗n〖〗i=1〖DD)〗Xi, M
n=max〖DD(〗〖〗1≤i≤n〖DD)〗 Xi, Sn(a)=∑〖DD(〗n〖〗i=1〖DD)〗X
iI{Mn-a  the weak convergence theorem and continuous mapping theorem, we proved the
 invariance principle for the product of trimmed sums.

Key words: trimmed sums, invariance principle, medium tail distribution, independent and identically distributed (i.i.d.)

中图分类号: 

  • O211.4