Rank-dependent GaltonWatson processes and their pathwise duals
Artikel i vetenskaplig tidskrift, 2018

We introduce a modified GaltonWatson process using the framework of an infinite system of particles labelled by (x,t), where x is the rank of the particle born at time t. The key assumption concerning the offspring numbers of different particles is that they are independent, but their distributions may depend on the particle label (x,t). For the associated system of coupled monotone Markov chains, we address the issue of pathwise duality elucidated by a remarkable graphical representation in which the trajectories of the primary Markov chains and their duals coalesce to form forest graphs on a two-dimensional grid.

dual forest

birth-death process

Graphical representation

linear-fractional reproduction

Siegmund's duality

Författare

Serik Sagitov

Chalmers, Matematiska vetenskaper, Tillämpad matematik och statistik

Jonas Jagers

Advances in Applied Probability

0001-8678 (ISSN) 1475-6064 (eISSN)

Vol. 50 A 229-239

Ämneskategorier

Matematik

DOI

10.1017/apr.2018.82

Mer information

Senast uppdaterat

2019-02-25