Abstract
LetG be a simple graph and letG denote its complement. We say thatG is integral if its spectrum consists of integral values. In this work we establish a characterization of integral graphs which belong to the class\(\overline {\alpha K_{a,a} \cup \beta {\rm K}_{b,b} } \) wheremG denotes them-fold union of the graphG.
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Lepović, M. On integral graphs which belong to the class\(\overline {\alpha K_{a,a} \cup \beta {\rm K}_{b,b} } \) . J. Appl. Math. Comput. 20, 61–74 (2006). https://doi.org/10.1007/BF02831924
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DOI: https://doi.org/10.1007/BF02831924