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arXiv · 2410.21724

Zero Forcing and Vertex Independence Number on Cubic and Subcubic Graphs

Houston Schuerger·Nathan Warnberg·Michael Young
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Abstract

Motivated by a conjecture from the automated conjecturing program TxGraffiti, in this paper the relationship between the zero forcing number, $Z(G)$, and the vertex independence number, $α(G)$, of cubic and subcubic graphs is explored. TxGraffiti conjectures that for all connected cubic graphs $G$, that are not $K_4$, $Z(G) \leq α(G) + 1$. This work uses decycling partitions of upper-embeddable graphs to show that almost all cubic graphs satisfy $Z(G) \leq α(G) + 2$, provides an infinite family of cubic graphs where $Z(G) = α(G) + 1$, and extends known bounds to subcubic graphs.

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Houston Schuerger, Nathan Warnberg, Michael Young. 2024-10-31. Zero Forcing and Vertex Independence Number on Cubic and Subcubic Graphs. https://arxiv.org/abs/2410.21724

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