English

Packing tree degree sequences

Combinatorics 2017-04-12 v1

Abstract

We consider packing tree degree sequences in this paper. We set up a conjecture that any arbitrary number of tree degree sequences without common leaves have edge disjoint tree realizations. This conjecture is known to be true for 22 and 33 tree degree sequences. In this paper, we give a proof for 44 tree degree sequences and a computer aided proof for 55 tree degree sequences. We also prove that for arbitrary kk, kk tree degree sequences without common leaves and at least 2k42k-4 vertices which are not leaves in any of the trees always have edge disjoint tree realizations. The main ingredient in all of the presented proofs is to find rainbow matchings in certain configurations.

Keywords

Cite

@article{arxiv.1704.03148,
  title  = {Packing tree degree sequences},
  author = {Aravind Gollakota and William Hardt and Istvan Miklos},
  journal= {arXiv preprint arXiv:1704.03148},
  year   = {2017}
}