设{Xn,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Sn=∑ from i=1 to n Xi,Mn=max(1≤i≤n)Xi,Sn(a)=∑ from i=1 to n XiI{Mn-a<Xi≤Mn},截断和Tn(a)=Sn-Sn(a).利用弱收敛定...设{Xn,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Sn=∑ from i=1 to n Xi,Mn=max(1≤i≤n)Xi,Sn(a)=∑ from i=1 to n XiI{Mn-a<Xi≤Mn},截断和Tn(a)=Sn-Sn(a).利用弱收敛定理和连续映射定理证明了截断和乘积的不变原理.展开更多
文摘设{Xn,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Sn=∑ from i=1 to n Xi,Mn=max(1≤i≤n)Xi,Sn(a)=∑ from i=1 to n XiI{Mn-a<Xi≤Mn},截断和Tn(a)=Sn-Sn(a).利用弱收敛定理和连续映射定理证明了截断和乘积的不变原理.
基金Projects supported by National Natural Science Foundation of China(10804071,60676059)Science Development Planing of Jilin Province(20070519,20080331,20090139,20090555)"Eleventh Five-Year"Science and Technology Research Project of Jilin Provincial Department of Education[2008]No.31and No.296~~
