Kingman's model with random mutation probabilities: convergence and condensation I

Yuan, Linglong (2020) Kingman's model with random mutation probabilities: convergence and condensation I. Unknown. (Unpublished)

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Official URL: https://arxiv.org/abs/2001.07033v1

Abstract

For a one-locus haploid infinite population with discrete generations, the celebrated Kingman's model describes the evolution of fitness distributions under the competition of selection and mutation, with a constant mutation probability. Letting mutation probabilities vary on generations reflects the influence of a random environment. This paper generalises Kingman's model by using a sequence of i.i.d. random mutation probabilities. For any distribution of the sequence, the weak convergence of fitness distributions to the globally stable equilibrium for any initial fitness distribution is proved. We define the condensation of the random model as that almost surely a positive proportion of the population travels to and condensates on the largest fitness value. The condensation may occur when selection is more favoured than mutation. A criterion is given to tell whether the condensation occurs or not.

Item Type:	Article
Depositing User:	Symplectic Admin
Date Deposited:	08 Apr 2020 10:23
Last Modified:	18 Jan 2023 23:55
Open Access URL:	https://arxiv.org/abs/2001.07033v1
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3082311