A limit theorem for trees of alleles in branching processes with rare neutral mutations

Abstract : We are interested in the genealogical structure of alleles for a Bienaymé-Galton-Watson branching process with neutral mutations (infinite alleles model), in the situation where the initial population is large and the mutation rate small. We shall establish that for an appropriate regime, the process of the sizes of the allelic sub-families converges in distribution to a certain continuous state branching process (i.e. a Jirina process) in discrete time. Itô's excursion theory and the Léevy-Itô decomposition of subordinators provide fundamental insights for the results.
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Preprints, Working Papers, ...
2009
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https://hal.archives-ouvertes.fr/hal-00373262
Contributor : Jean Bertoin <>
Submitted on : Thursday, June 25, 2009 - 10:59:07 AM
Last modification on : Tuesday, October 11, 2016 - 3:20:24 PM
Document(s) archivé(s) le : Wednesday, September 22, 2010 - 1:24:10 PM

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  • HAL Id : hal-00373262, version 2
  • ARXIV : 0904.0581

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Jean Bertoin. A limit theorem for trees of alleles in branching processes with rare neutral mutations. 2009. <hal-00373262v2>

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