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The Critical Galton-Watson Process Without Further Power Moments
Published online by Cambridge University Press: 14 July 2016
Abstract
In this paper we prove a conditional limit theorem for a critical Galton-Watson branching process {Zn; n ≥ 0} with offspring generating function s + (1 − s)L((1 − s)−1), where L(x) is slowly varying. In contrast to a well-known theorem of Slack (1968), (1972) we use a functional normalization, which gives an exponential limit. We also give an alternative proof of Sze's (1976) result on the asymptotic behavior of the nonextinction probability.
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- Copyright © Applied Probability Trust 2007
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