English

Orientations of infinite graphs

Combinatorics 2021-04-21 v2

Abstract

Building on recent work by Thomassen, we show that Nash-Williams' orientation theorem, that every finite 2k2k-edge-connected multigraph has a kk-arc-connected orientation, also holds for all infinite multigraphs.

Keywords

Cite

@article{arxiv.2011.05936,
  title  = {Orientations of infinite graphs},
  author = {Marcel Koloschin and Max Pitz},
  journal= {arXiv preprint arXiv:2011.05936},
  year   = {2021}
}

Comments

We thought we had a proof that every 2k-edge-connected graph has a k-strong edge-connected orientation, however we currently only get a bound of 4k. The mistake lies in Theorem 2.1

R2 v1 2026-06-23T20:06:05.591Z