English

On the balanceability of some graph classes

Combinatorics 2026-04-17 v2 Discrete Mathematics

Abstract

Given a graph GG, a 2-coloring of the edges of KnK_n is said to contain a balanced copy of GG if we can find a copy of GG such that half of its edges are in each color class. If, for every sufficiently large nn, there exists an integer kk such that every 2-coloring of KnK_n with more than kk edges in each color class contains a balanced copy of GG, then we say that GG is balanceable. Balanceability was introduced by Caro, Hansberg and Montejano, who also gave a structural characterization of balanceable graphs. In this paper, we extend the study of balanceability by finding new sufficient conditions for a graph to be balanceable or not. We use those conditions to fully characterize the balanceability of graph classes such as rectangular and triangular grids, as well as a special class of circulant graphs.

Keywords

Cite

@article{arxiv.2003.04804,
  title  = {On the balanceability of some graph classes},
  author = {Antoine Dailly and Adriana Hansberg and Denae Ventura},
  journal= {arXiv preprint arXiv:2003.04804},
  year   = {2026}
}

Comments

16 pages

R2 v1 2026-06-23T14:10:21.977Z