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Asymptotics of the Hurwitz Binomial Distribution Related to Mixed Poisson Galton–Watson Trees

Published online by Cambridge University Press:  25 June 2001

JÜRGEN BENNIES
Affiliation:
Department of Statistics, University of California, 367 Evans Hall # 3860, Berkeley, CA 94720-3860, USA (e-mail: pitman@stat.berkeley.edu)
JIM PITMAN
Affiliation:
Department of Statistics, University of California, 367 Evans Hall # 3860, Berkeley, CA 94720-3860, USA (e-mail: pitman@stat.berkeley.edu)

Abstract

Hurwitz's extension of Abel's binomial theorem defines a probability distribution on the set of integers from 0 to n. This is the distribution of the number of non-root vertices of a fringe subtree of a suitably defined random tree with n + 2 vertices. The asymptotic behaviour of this distribution is described in a limiting regime in which the fringe subtree converges in distribution to a Galton–Watson tree with a mixed Poisson offspring distribution.

Type
Research Article
Copyright
2001 Cambridge University Press

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