Journal
JOURNAL OF APPLIED PROBABILITY
Volume 53, Issue 2, Pages 614-621Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/jpr.2016.26
Keywords
Branching process; size dependence; threshold; extinction time
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Funding
- Department of Mathematics, Iowa State University
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In this paper we study a special class of size dependent branching processes. We assume that for some positive integer K as long as the population size does not exceed level K, the process evolves as a discrete-time supercritical branching process, and when the population size exceeds level K, it evolves as a subcritical or critical branching process. It is shown that this process does die out in finite time T. The question of when the mean value E(T) is finite or infinite is also addressed.
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