Geodesic
Color energy of a unitary Cayley graph
Discussiones Mathematicae. Graph Theory, Tome 34 (2014) no. 4, pp. 707-721

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Let G be a vertex colored graph. The minimum number χ(G) of colors needed for coloring of a graph G is called the chromatic number. Recently, Adiga et al. [1] have introduced the concept of color energy of a graph Ec(G) and computed the color energy of few families of graphs with χ(G) colors. In this paper we derive explicit formulas for the color energies of the unitary Cayley graph Xn, the complement of the colored unitary Cayley graph (Xn)c and some gcd-graphs.
Keywords: coloring of a graph, unitary Cayley graph, gcd-graph, color eigenvalues, color energy 
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     author = {Adiga, Chandrashekar and Sampathkumar, E. and Sriraj, M.A.},
     title = {Color energy of a unitary {Cayley} graph},
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Adiga, Chandrashekar; Sampathkumar, E.; Sriraj, M.A. Color energy of a unitary Cayley graph. Discussiones Mathematicae. Graph Theory, Tome 34 (2014) no. 4, pp. 707-721. http://geodesic.mathdoc.fr/item/DMGT_2014_34_4_a4/