Reduced branching processes with very heavy tails

Details Reduced branching processes with very heavy tails Reduced branching processes with very heavy tails

2007-10-15

arxiv.org/abs/0710.2755v1

Mathematics

Probability

15 pages, 1 figure

Scientific paper

The reduced Markov branching process is a stochastic model for the genealogy of an unstructured biological population. Its limit behavior in the critical case is well studied for the Zolotarev-Slack regularity parameter $\alpha\in(0,1]$. We turn to the case of very heavy tailed reproduction distribution $\alpha=0$ assuming Zubkov's regularity condition with parameter $\beta\in(0,\infty)$. Our main result gives a new asymptotic pattern for the reduced branching process conditioned on non-extinction during a long time interval.

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