The $n/2$-bound for locating-dominating sets in subcubic graphs
Combinatorics
2024-06-28 v1
Abstract
The location-domination number is conjectured to be at most half of the order for twin-free graphs with no isolated vertices. We prove that this conjecture holds and is tight for subcubic graphs. We also show that the same upper bound holds for subcubic graphs with open twins of degree 3 and closed twins of any degree, but not for subcubic graphs with open twins of degree 1 or 2. These results then imply that the same upper bound holds for all cubic graphs (with or without twins) except and .
Cite
@article{arxiv.2406.19278,
title = {The $n/2$-bound for locating-dominating sets in subcubic graphs},
author = {Dipayan Chakraborty and Anni Hakanen and Tuomo Lehtilä},
journal= {arXiv preprint arXiv:2406.19278},
year = {2024}
}