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Stochastic Processes and their Applications, 2012, Volume 122, Issue 7, Pages 2594–2609
DOI: https://doi.org/10.1016/j.spa.2012.04.008
(Mi spa2)
 

This article is cited in 16 scientific papers (total in 16 papers)

Subcritical branching processes in a random environment without the Cramer condition

V. Vatutina, X. Zhengb

a Department of Discrete Mathematics, Steklov Mathematical Institute, 8 Gubkin Street, 119 991 Moscow, Russia
b Department of ISOM, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong Special Administrative Region
Citations (16)
Abstract: A subcritical branching process in random environment (BPRE) is considered whose associated random walk does not satisfy the Cramer condition. The asymptotics for the survival probability of the process is investigated, and a Yaglom type conditional limit theorem is proved for the number of particles up to moment n given survival to this moment. Contrary to other types of subcritical BPRE, the limiting distribution is not discrete. We also show that the process survives for a long time owing to a single big jump of the associate random walk accompanied by a population explosion at the beginning of the process.
Funding agency Grant number
Russian Foundation for Basic Research 11-01-00139
HKSAR GRF 606010
First author’s research partially supported by the Russian Foundation for Basic Research, grant 11-01-00139. Second author’s research partially supported by GRF 606010 of the HKSAR.
Received: 04.01.2012
Revised: 10.04.2012
Accepted: 15.04.2012
Bibliographic databases:
Document Type: Article
Language: English
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