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Malthusian behaviour of the critical and subcritical age-dependent branching processes with arbitrary state space

Published online by Cambridge University Press:  14 July 2016

D. I. Saunders*
Affiliation:
South Australian Institute of Technology, Ingle Farm, South Australia

Abstract

For the age-dependent branching process with arbitrary state space let M(x, t, A) be the expected number of individuals alive at time t with states in A given an initial individual at x. Subject to various conditions it is shown that M(x, t, A)e–at converges to a non-trivial limit where α is the Malthusian parameter (α = 0 for the critical case, and is negative in the subcritical case). The method of proof also yields rates of convergence.

Type
Research Papers
Copyright
Copyright © Applied Probability Trust 1976 

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References

[1] Athreya, K. B. and Ney, P. E. (1972) Branching Processes. Springer, Berlin.CrossRefGoogle Scholar
[2] Bircher, J. J. and Mode, C. J. (1971) An age-dependent branching process with arbitrary state space I. J. Math. Anal. Appl. 36, 4159.CrossRefGoogle Scholar
[3] Dunford, N. and Schwartz, J. (1959) Linear Operators. Part I, General Theory. Interscience, New York.Google Scholar
[4] Haar, A. (1927) Über asymptotische Entwicklungen von Funktionen. Math. Ann. 96, 69107.CrossRefGoogle Scholar
[5] Harris, T. E. (1963) The Theory of Branching Processes. Springer, Berlin.CrossRefGoogle Scholar
[6] Karlin, S. (1959) Positive operators. J. Math. Mech. 8, 907937.Google Scholar
[7] Lovitt, W. V. (1950) Linear Integral Equations. Dover, New York.Google Scholar
[8] Mode, C. J. (1971) Multitype Branching Processes. American Elsevier, New York.Google Scholar
[9] Mode, C. J. (1971) Applications of the Fredholm theory in Hilbert space to infinite systems of renewal type integral equations. Math. Biosci. 12, 347366.CrossRefGoogle Scholar
[10] Mode, C. J. (1972) Limit theorems for infinite systems of renewal type integral equations arising in age-dependent branching processes. Math. Biosci. 13, 165177.CrossRefGoogle Scholar
[11] Mode, C. J. and Bircher, J. J. (1970) On the foundations of age-dependent branching processes with arbitrary state space. J. Math. Anal. Appl. 32, 435444.CrossRefGoogle Scholar
[12] Moyal, J. E. (1962) The general theory of stochastic population processes. Acta Math. 108, 131.CrossRefGoogle Scholar
[13] Nair, K. A. and Mode, C. J. (1971) A multidimensional age-dependent branching process — subcritical case. J. Math. Anal. Appl. 34, 567577.CrossRefGoogle Scholar
[14] Saunders, D. I. (1975) Branching Processes with Arbitrary Type Space. , Flinders University of South Australia.Google Scholar
[15] Schumitzky, A. and Wenska, T. (1975) An operator residue theorem with applications to branching processes and renewal type integral equations. SIAM J. Math. Anal. 6, 229235.CrossRefGoogle Scholar
[16] Tricomi, F. G. (1975) Integral Equations. Interscience, New York.Google Scholar
[17] Widder, D. V. (1946) The Laplace Transform. Princeton University Press, Princeton, N.J.Google Scholar