Nathanson's Heights and the CSS Conjecture for Cayley Graphs

Yotsanan Meemark, Chaiwat Pinthubthaworn

Let $G$ be a finite directed graph, $\beta (G)$ the minimum size of a subset $X$ of edges such that the graph $G^{\prime }=(V,E\setminus X)$ is directed acyclic and $\gamma (G)$ the number of…