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The asymptotic frequencies of the types in a multitype age-dependent branching process allowing immigration

Published online by Cambridge University Press:  14 July 2016

J. Radcliffe*
Affiliation:
Queen Mary College, London

Abstract

The mean square and almost sure convergence of W(t) = e–αtZ(t) is proved for a super-critical multitype age-dependent branching process allowing immigration at the epochs of a renewal process. It is shown that the Malthusian parameter, asymptotic frequencies of types and stationary age distributions are the same for the processes with and without immigration.

Type
Short Communications
Copyright
Copyright © Applied Probability Trust 1973 

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References

Harris, T. E. (1963) The Theory of Branching Processes. Springer Verlag, Berlin.10.1007/978-3-642-51866-9Google Scholar
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Mode, C. J. (1971) Multitype Branching Processes: Theory and Applications. American Elsevier, New York.Google Scholar
Radcliffe, J. (1972a) The convergence of a generalized multitype age-dependent branching process with Poisson immigration. Math. Biosciences 13, 125132.10.1016/0025-5564(72)90028-4Google Scholar
Radcliffe, J. (1972b) The convergence of a super-critical age-dependent branching process allowing immigration at the epochs of a renewal process. Math. Biosciences 14, 3744.10.1016/0025-5564(72)90005-3Google Scholar