We provide a short proof of a conjecture of Davila and Kenter concerning a lower bound on the zero forcing number Z(G) of a graph G. More specifically, we show that Z(G)≥(g−2)(δ−2)+2 for every graph G of girth g at least 3 and minimum degree δ at least 2.
@article{arxiv.1705.08365,
title = {A Short Proof for a Lower Bound on the Zero Forcing Number},
author = {M. Fürst and D. Rautenbach},
journal= {arXiv preprint arXiv:1705.08365},
year = {2017}
}