English

A recursive distribution equation for the stable tree

Probability 2018-12-21 v1

Abstract

We provide a new characterisation of Duquesne and Le Gall's α\alpha-stable tree, α(1,2]\alpha\in(1,2], as the solution of a recursive distribution equation (RDE) of the form T=dg(ξ,Ti,i0)\mathcal{T}\overset{d}{=}g(\xi,\mathcal{T}_i, i\geq0), where gg is a concatenation operator, ξ=(ξi,i0)\xi = (\xi_i, i\geq 0) a sequence of scaling factors, Ti\mathcal{T}_i, i0i \geq 0, and T\mathcal{T} are i.i.d. trees independent of ξ\xi. This generalises a version of the well-known characterisation of the Brownian Continuum Random Tree due to Aldous, Albenque and Goldschmidt. By relating to previous results on a rather different class of RDE, we explore the present RDE and obtain for a large class of similar RDEs that the fixpoint is unique (up to multiplication by a constant) and attractive.

Keywords

Cite

@article{arxiv.1812.08636,
  title  = {A recursive distribution equation for the stable tree},
  author = {Nicholas Chee and Franz Rembart and Matthias Winkel},
  journal= {arXiv preprint arXiv:1812.08636},
  year   = {2018}
}

Comments

30 pages, 5 figures

R2 v1 2026-06-23T06:51:29.040Z