• THE HYPER-ZAGREB INDEX OF SOME DERIVED GRAPHS
Abstract
Let be a connected graph. The hyper-Zagreb index is defined as In this paper, comparison of the hyper-Zagreb index and other degree based topological indices like the Forgotten index, Zagreb and Banhatti indices of some derived graphs such as line graph, subdivision graph, vertex-semitotal graph, edge-semitotal graph and total graph are obtained. In addition, exact values of some standard graphs of above derived graphs are presented.
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