A characterization of 2-neighborhood degree list of diameter 2 graphs

N. Benakli, E. Halleck, S. R. Kingan

Let $N_{2}DL(v)$ denote the set of degrees of vertices at distance 2 from $v$. The $2$-neighborhood degree list of a graph is a listing of $N_{2}DL(v)$ for every vertex $v$. A degree r…