Spectra of Graphs and Closed Distance Magic Labelings

Abstract

Let $G=(V,E)$ be a graph of order $n$. A closed distance magic labeling of $G$ is a bijection $\ell :V(G)\to \{1,\dots ,n\}$ for which there exists a positive integer $k$ such that ${\sum }_{x\in N[v]}\ell (x)=k$ for all $v\in V$, where $N[v]$ is the closed neighborhood of $v$. We consider the closed distance magic graphs in the algebraic context. In particular we analyze the relations between the closed distance magic labelings and the spectra of graphs. These results are then applied to the strong product of graphs with complete graph or cycle and to the circulant graphs. We end with a number theoretic problem whose solution results in another family of closed distance magic graphs somewhat related to the strong product.

References in corpus (2)

• Distance magic labeling and two products of graphs
• Magic labelings of distance at most 2

Cited by in corpus (2)

• On distance magic circulants of valency 6
• $D$-Magic Strongly Regular Graphs