English

An approximate version of the Tree Packing Conjecture

Combinatorics 2017-07-31 v3

Abstract

We prove that for any pair of constants ϵ>0\epsilon>0 and Δ\Delta and for nn sufficiently large, every family of trees of orders at most nn, maximum degrees at most Δ\Delta, and with at most (n2)\binom{n}{2} edges in total packs into K(1+ϵ)nK_{(1+\epsilon)n}. This implies asymptotic versions of the Tree Packing Conjecture of Gyarfas from 1976 and a tree packing conjecture of Ringel from 1963 for trees with bounded maximum degree. A novel random tree embedding process combined with the nibble method forms the core of the proof.

Keywords

Cite

@article{arxiv.1404.0697,
  title  = {An approximate version of the Tree Packing Conjecture},
  author = {Julia Böttcher and Jan Hladký and Diana Piguet and Anusch Taraz},
  journal= {arXiv preprint arXiv:1404.0697},
  year   = {2017}
}

Comments

38 pages, 2 figures; suggestions by an anonymous referee incorporated; accepted to Israel J Math

R2 v1 2026-06-22T03:41:37.693Z