The forest associated with the record process on a Lévy tree

Research output: Contribution to journalArticlepeer-review

Abstract

We perform a pruning procedure on a Lévy tree and instead of throwing away the removed sub-tree, we regraft it on a given branch (not related to the Lévy tree). We prove that the tree constructed by regrafting is distributed as the original Lévy tree, generalizing a result of Addario-Berry, Broutin and Holmgren where only Aldous's tree is considered. As a consequence, we obtain that the "average pruning time" of a leaf is distributed as the height of a leaf picked at random in the Lévy tree.

Original languageEnglish
Pages (from-to)3497-3517
Number of pages21
JournalStochastic Processes and their Applications
Volume123
Issue number9
DOIs
Publication statusPublished - 31 May 2013

Keywords

  • Continuum random tree
  • Cutting down a tree
  • Lévy tree
  • Records

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