Subgroup sum graphs of finite abelian groups

Peter J. Cameron, R. Raveendra Prathap, T. Tamizh Chelvam

Let $G$ be a finite abelian group, written additively, and $H$ a subgroup of~$G$. The \emph{subgroup sum graph} ${\Gamma }_{G,H}$ is the graph with vertex set $G$, in which two distinct ve…