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G is a (molecular)graph,its energy ,denoted by E(G),is definedto be the absolute values of all eigenvalues of adjacency matrix of G.Let ɡ2l,r,k1,k2 (k1 ≥k2≥ 0) the graph obtained by attaching k1
And k2 pendent edges to the first vertex and the r-th vertex of the cycle Cl,respectively.Wecharacterized energy change and the extremalenergy graphs in ɡ2l,r,k1,k2 (k1 ≥k2≥ 0). |
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Keywords:Bipartite unicyclic graph;Energy;Pendent vertex |
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