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随机环境中受传染性疾病影响的分枝过程的极限性质
引用本文:任敏.随机环境中受传染性疾病影响的分枝过程的极限性质[J].浙江大学学报(理学版),2022,49(1):53-59.
作者姓名:任敏
作者单位:宿州学院 数学与统计学院,安徽 宿州 234000
基金项目:国家自然科学基金面上项目(11371029);安徽省大规模在线开放课程项目(2019mooc229);安徽省应用型本科高校联盟精品线下开放课程项目(2019kfkc324);安徽省质量工程研究项目(2018jyxm0697)
摘    要:给出了独立随机环境中受传染性疾病影响的分枝过程{Zn,nN}的模型,讨论了该模型的极限性质,并给出了分枝过程经{Sn,nN}{Un,nN}规范化后{W?n,nN}{Wˉn,nN}几乎处处收敛和L1收敛的充分条件,得到{W?n,nN}L2收敛的充分条件和{W?n,nN}极限非退化到0的充分条件和必要条件。

关 键 词:随机环境  传染性疾病  分枝过程  几乎处处收敛  
收稿时间:2020-11-23

Limit properties for branching process affected by communicable diseases in random environments
Min REN.Limit properties for branching process affected by communicable diseases in random environments[J].Journal of Zhejiang University(Sciences Edition),2022,49(1):53-59.
Authors:Min REN
Institution:School of Mathematics and Statistics, Suzhou College, Suzhou 234000, Anhui Province, China
Abstract:The model of branching process {Zn,nN} affected by communicable diseases in independent random environment is proposed,and the limit properties of this model are discussed.Under the normalization factors {Sn,nN} and {Un,nN},the normalization processes {W?n,nN} and {Wˉn,nN} are studied,the sufficient conditions of {W?n,nN} and {Wˉn,nN} a.s.and L1 convergence are given; the sufficient condition of {W?n,nN}L2 convergence,a sufficient condition and a necessary condition for the limit of {W?n,nN} converging to a non-degenerate at 0 random variable are obtained.
Keywords:random environments  communicable diseases  branching process  almost everywhere convergence  
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