The energy of a simple graph G, denoted by E(G), is defined as the sum of the absolute values of all eigenvalues of its adjacency matrix. Let Cn denote the cycle of order n and Pn6,6 the graph obtained from joining two cycles C6 by a path Pn-12 with its two leaves. Let Bn denote the class of all bipartite bicyclic graphs but not the graph Ra,b, which is obtained from joining two cycles Ca and Cb (a,b≥10...
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