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二重随机变量序列的P-收敛性
作者姓名:张志洋  胡晓予
作者单位:中国科学院大学数学科学学院, 北京 100049
基金项目:国家自然科学基金(11171342)资助
摘    要:研究两种情形下二重随机变量序列{Xn,i:n≥1,i≥1}的随机和的P-收敛性.一种情形是求和个数(随机变量ξn)与{Xn,i:n≥1,i≥1}相互独立,另一种情形是{ξn:n≥1}与{Xn,i:n≥1,i≥1}不一定独立.这其中包括变化环境中分枝过程的P-收敛性.

关 键 词:二重序列随机和  分枝过程  P-收敛  
收稿时间:2015-07-08
修稿时间:2016-03-24

P-convergence of a double sequence of random variables
Authors:ZHANG Zhiyang  HU Xiaoyu
Institution:School of Mathematical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Abstract:In this study we investigate the P-convergence of random sum(say ξn) of a double random sequence of random variables {Xn,i:n≥1,i≥1} in two cases. The first case is that {ξn:n≥1} is independent of Xn,i:n≥1,i≥1},and the second case is that {ξn:n≥1} is not necessarily independent of the double sequence {Xn,i:n≥1,i≥1}.These results include P-convergence of a branching process in varying environments.
Keywords:random sum of a double random sequence of random variables                                                                                                                        branching process                                                                                                                        P-convergence
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