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The asymptotic behaviour of extinction probability in the Smith–Wilkinson branching process

Part of:Markov processes

Published online by Cambridge University Press:  01 July 2016

D. R. Grey and
Lu Zhunwei
D. R. Grey*
Affiliation:
University of Sheffield
Lu Zhunwei
Affiliation:
University of Sheffield
*
∗Postal address: Department of Probability and Statistics, The University of Sheffield, PO Box 597, Sheffield, S10 2UN, UK.
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Abstract

Under some regularity conditions, in the supercritical Smith–Wilkinson branching process it is shown that as k, the starting population size, tends to infinity, the rate of convergence of qk, the corresponding extinction probability, to zero is similar to that of:

k–θ, if there exists at least one subcritical state in the random environment space; xkk–α , if there exist only supercritical states in the random environment space; exp , if there exists at least one critical state and the others are supercritical in the random environment space.

Here θ, x, α and c are positive constants determined by the process.

Keywords

BRANCHING PROCESS IN RANDOM ENVIRONMENTDUAL PROCESS

MSC classification

Primary:60J80: Branching processes (Galton-Watson, birth-and-death, etc.)
Secondary:60J85: Applications of branching processes

Information

Type
Research Article
Information
Advances in Applied Probability , Volume 25 , Issue 2 , June 1993, pp. 263 - 289
Copyright
Copyright © Applied Probability Trust 1993 

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Footnotes

∗∗

Present address: Department of Mathematics, Physics and Mechanics, Taiyuan University of Technology, Taiyuan, Shanxi Province, People's Republic of China.

References

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