English

Long $A$-$B$-paths have the edge-Erd\H os-P\'osa property

Combinatorics 2019-03-20 v1

Abstract

For a fixed integer \ell a path is long if its length is at least \ell. We prove that for all integers kk and \ell there is a number f(k,)f(k,\ell) such that for every graph GG and vertex sets A,BA,B the graph GG either contains kk edge-disjoint long AA-BB-paths or it contains an edge set FF of size Ff(k,)|F|\leq f(k,\ell) that meets every long AA-BB-path. This is the edge analogue of a theorem of Montejano and Neumann-Lara (1984). We also prove a similar result for long AA-paths and long S\mathcal{S}-paths.

Keywords

Cite

@article{arxiv.1903.07989,
  title  = {Long $A$-$B$-paths have the edge-Erd\H os-P\'osa property},
  author = {Matthias Heinlein and Arthur Ulmer},
  journal= {arXiv preprint arXiv:1903.07989},
  year   = {2019}
}