Please wait a minute...
浙江大学学报(理学版)  2022, Vol. 49 Issue (1): 53-59    DOI: 10.3785/j.issn.1008-9497.2022.01.008
数学与计算机科学     
随机环境中受传染性疾病影响的分枝过程的极限性质
任敏()
宿州学院 数学与统计学院,安徽 宿州 234000
Limit properties for branching process affected by communicable diseases in random environments
Min REN()
School of Mathematics and Statistics, Suzhou College, Suzhou 234000, Anhui Province, China
 全文: PDF(462 KB)   HTML( 9 )
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    
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.

Key words: random environments    communicable diseases    branching process    almost everywhere convergence
收稿日期: 2020-11-23 出版日期: 2022-01-18
CLC:  O 211.65  
基金资助: 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)
作者简介: 任敏(1982—),ORCID:https//orcid-org/0000-0002-6312-0750,女,硕士,副教授,主要从事随机过程及其应用研究,E-mail:rm0107116@163.com.
服务  
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章  
任敏

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.

Min REN. Limit properties for branching process affected by communicable diseases in random environments. Journal of Zhejiang University (Science Edition), 2022, 49(1): 53-59.

链接本文:

https://www.zjujournals.com/sci/CN/10.3785/j.issn.1008-9497.2022.01.008        https://www.zjujournals.com/sci/CN/Y2022/V49/I1/53

  
1 WILKINSON W E.Branching Processes in Stochastic Environments[D].Chapel Hill:University of North Carolina,1967.
2 SMITH W L.Necessary Condition for Almost Sure Extinction of A Branching Processes with Random Environment[D].Chapel Hill:University of North Carolina,1967. doi:10.1214/aoms/1177698045
doi: 10.1214/aoms/1177698045
3 SMITH W L,WILKINSON W E.On branching processes in random environments[J].The Annals of Mathematical Statistics,1969,40(3):814-827. DOI:10.1214/aoms/1177697589
doi: 10.1214/aoms/1177697589
4 SMITH W L,WILKINSON W E.Branching processes in Markovian environments[J].Duke Mathematical Journal,1971,38(4):749-763. DOI:10.1215/S0012-7094-71-03891-9
doi: 10.1215/S0012-7094-71-03891-9
5 李应求,李德如,潘生,等.随机环境中受控分枝过程的极限定理[J].数学学报,2018,61(2):317-326. DOI:10.3969/j.issn.0583-1431.2018.02.011
LI Y Q,LI D R,PAN S,et al.Limit theorems for controlled branching processes in random environments[J]. Acta Mathematica Sinica,2018,61(2):317-326. DOI:10.3969/j.issn.0583-1431.2018. 02.011
doi: 10.3969/j.issn.0583-1431.2018. 02.011
6 任敏,张光辉,李茹.随机环境中具有迁移的分枝过程的极限性质[J].淮北师范大学学报(自然科学版),2016,37(3):7-11.
REN M,ZHANG G H,LI R.Limit properties for branching process with migration in random environments[J].Journal of Huaibei Normal University(Natural Science),2016,37(3):7-11.
7 谭珂,陈晔,王玉苹.随机环境中受控分枝过程的极限性质[J].湖南文理学院学报(自然科学版),2020,32(1):1-3,78. DOI:10.3969/j.issn.1672-6146. 2020.01.001
TAN K,CHEN Y,WANG Y P.Limit properties of controlled branching process in a random environment[J]. Journal of Hunan University of Arts and Science(Natural Science Edition),2020,32(1):1-3,78. DOI:10.3969/j.issn.1672-6146.2020. 01.001
doi: 10.3969/j.issn.1672-6146.2020. 01.001
8 王玉萍,彭朝晖,黎宁莎.随机环境中受控分枝过程的收敛速率[J].湖南文理学院学报(自然科学版),2018,30(4):8-12. DOI:10.3969/j.issn.1672-6146. 2018.04.003
WANG Y P,PENG Z H,LI N S.The convergence rate of controlled branching process in random environment[J]. Journal of Hunan University of Arts and Science(Natural Science Edition),2018,30(4):8-12. DOI:10.3969/j.issn.1672-6146.2018. 04.003
doi: 10.3969/j.issn.1672-6146.2018. 04.003
[1] 费时龙. 多重随机环境中马氏链及其强大数定律[J]. 浙江大学学报(理学版), 2017, 44(4): 411-416.