English

Asymptotics for the small fragments of the fragmentation at nodes

Probability 2007-05-23 v1

Abstract

We consider the fragmentation at nodes of the L\'{e}vy continuous random tree introduced in a previous paper. In this framework we compute the asymptotic for the number of small fragments at time θ\theta. This limit is increasing in θ\theta and discontinuous. In the α\alpha-stable case the fragmentation is self-similar with index 1/α1/\alpha, with α(1,2)\alpha \in (1,2) and the results are close to those Bertoin obtained for general self-similar fragmentations but with an additional assumtion which is not fulfilled here.

Keywords

Cite

@article{arxiv.math/0603192,
  title  = {Asymptotics for the small fragments of the fragmentation at nodes},
  author = {Romain Abraham and Jean-François Delmas},
  journal= {arXiv preprint arXiv:math/0603192},
  year   = {2007}
}