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数学与物理学

变化环境中Galton-Watson过程的重对数律

  • 南晓杰
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  • 中国科学院大学数学科学学院, 北京 100049

收稿日期: 2015-03-03

  修回日期: 2015-05-18

  网络出版日期: 2016-03-15

基金资助

Supported by National Natural Science Foundation of China(11171342)

Law of iterated logarithm of Galton-Watson processes in varying environment

  • NAN Xiaojie
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  • School of Mathematical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2015-03-03

  Revised date: 2015-05-18

  Online published: 2016-03-15

Supported by

Supported by National Natural Science Foundation of China(11171342)

摘要

借助Berry-Esseen引理和Asmussen对条件Borel-Cantelli 引理的重要推广, 在变化环境中上临界分枝过程的每一代每一个个体的后代个体总数的 2 阶矩有一致上下界的情况下, 得到变化环境中分枝过程的重对数律, 从而改进了在相应的2+δ阶矩有限条件下的证明.

本文引用格式

南晓杰 . 变化环境中Galton-Watson过程的重对数律[J]. 中国科学院大学学报, 2016 , 33(2) : 145 -149 . DOI: 10.7523/j.issn.2095-6134.2016.02.001

Abstract

By the Berry-Esseen lemma and an important extension of the conditional Borel-Cantelli lemma (Asmussen, Trans Am Math Soc,1977,231:233), we obtain the law of the iterated logarithm of the branching processes in varying environment under the condition that the second moment of the number of the offspring of each individual of each generation is uniformly upper/lower bounded. Further more, the condition is weaker than that of Gao(Gao, UCAS, Thesis 2011).

参考文献

[1] Heyde C C. Some almost sure convergence theorems for branching processes[J]. Z Wahrscheinlichkeitstheorie verw Geb, 1971, 20: 189-192.
[2] Heyde C C, Leslie J R. Improved classical limit analogues for Galton-Watson processes with or without immigration[J]. Bull Austral Math Soc, 1971, 5: 145-155.
[3] Asmussen S. Almost sure behavior of linear functionals of supercritical branching processes[J]. Transactions of The American Mathematical Society, 1977, 231(1): 233-248.
[4] Huggins R M. Laws of the iterated logarithm for time changed brownian motion with an application to branching processes[J]. Ann Probability, 1985, 13(4): 1148-1156.
[5] Gao Z L. Limit theorems for Galton-Watson processes in random environments[D]. Beijing: Graduate University of Chinese Academy of Sciences, 2011(in Chinese).
[6] Fearn D H. Galton-Watson processes with generation dependence[J]. Proc Sixth Berkeley Symp Math Statist Probab, 1971, 2: 159-172.
[7] Durrett R. Probability:theory and examples[M]. 3rd ed. Beijing: World Book Inc, 2011.

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