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 language | English |
|---|---|
| Pages (from-to) | 3497-3517 |
| Number of pages | 21 |
| Journal | Stochastic Processes and their Applications |
| Volume | 123 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 31 May 2013 |
Keywords
- Continuum random tree
- Cutting down a tree
- Lévy tree
- Records