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Near-constancy phenomena in branching processes

Published online by Cambridge University Press:  24 October 2008

J. D. Biggins
Affiliation:
Department of Probability and Statistics, The University of Sheffield, P.O. Box 597, Sheffield 510 2UN
N. H. Bingham
Affiliation:
Mathematical Department, Royal Holloway and Bedford New College, Egham Hill, Egham, Surrey TW2O OEX

Extract

The occurrence of certain ‘near-constancy phenomena’ in some aspects of the theory of (simple) branching processes forms the background for the work below. The problem arises out of work by Karlin and McGregor [8, 9]. A detailed study of the theoretical and numerical aspects of the Karlin–McGregor near-constancy phenomenon was given by Dubuc[7], and considered further by Bingham[4]. We give a new approach which simplifies and generalizes the results of these authors. The primary motivation for doing this was the recent work of Barlow and Perkins [3], who observed near-constancy in a framework not immediately covered by the results then known.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1991

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References

REFERENCES

[1]Abramowitz, M. and Stegun, I. A.. Handbook of Mathematical Functions with Formulas, Graphs and Mathematical Tables (Dover, 1965).Google Scholar
[2]Athreya, K. B. and Ney, P. E.. Branching Process (Springer-Verlag, 1972).CrossRefGoogle Scholar
[3]Barlow, M. T. and Perkins, E. A.. Brownian motion on the Sierpinski gasket. Probab. Theory Related Fields 79 (1988), 543624.CrossRefGoogle Scholar
[4]Bingham, N. H.. On the limit of a supereritical branching process. J. Appl. Probab. 25A (1988), 215228.CrossRefGoogle Scholar
[5]Copson, E. T.. An Introduction to the Theory of Functions of a Complex Variable (Oxford University Press, 1935).Google Scholar
[6]Dubuc, S.. La densité de Ia loi-limite d'un processus en cascade expansif. Z. Wahrsch. Verw. Gebiete 19 (1971), 281290.CrossRefGoogle Scholar
[7]Dubuc, S.. Etude théorique et numérique de Ia fonction de Karlin–McGregor. J. Analyse Math. 42 (1982), 1537.CrossRefGoogle Scholar
[8]Karlin, S. and McGregor, J.. Embeddability of discrete-time branching processes into continuous-time branching processes. Trans. Amer. Math. Soc. 132 (1968), 115136.CrossRefGoogle Scholar
[9]Karlin, S. and McGregor, J.. Embedding iterates of analytic functions with two fixed points into continuous groups. Trans. Amer. Math. Soc. 132 (1968), 137145.CrossRefGoogle Scholar
[10]Linnik, Yu. V. and Ostrovskii, I. V.. Decomposition of Random Variables and Vectors. Transl. Math. Monographs no. 48. (American Mathematical Society, 1977).Google Scholar
[11]Nadarajah, S.. Near-constancy phenomena in branching processes. M.Sc. thesis, Sheffield University (1990).Google Scholar
[12]Nielsen, N.. Die Gammafunktion (Chelsea, 1965).Google Scholar
[13]Titchmarsh, E. C.. The Theory of Functions (Oxford University Press, 1939).Google Scholar