Title of article :
Spectra of extended neighborhood corona and extended corona of two graphs
Author/Authors :
Adiga, Chandrashekar University of Mysore - Department of Studies in Mathematics, INDIA , Rakshith, B. R. University of Mysore - Department of Studies in Mathematics, INDIA , Subba Krishna, K. N. University of Mysore - Department of Studies in Mathematics, INDIA
Abstract :
In this paper we define extended corona and extended neighborhood corona of two graphs G1and G2, which are denoted by G1 • G2 and G1 * G2 respectively. We compute their adjacencyspectrum, Laplacian spectrum and signless Laplacian spectrum. As applications, we give methodsto construct infinite families of integral graphs, Laplacian integral graphs and expander graphsfrom known ones.
Keywords :
corona , integral graphs , energy of a graph , expander graphs
Journal title :
Electronic Journal of Graph Theory and Applications (EJGTA)
Journal title :
Electronic Journal of Graph Theory and Applications (EJGTA)
