讨论了连通图hyper-Wiener指标的性质,研究了其图的变换规律,并得到了单圈图中具有最大hyper-Wiener指标的极图.%In this paper,the properties of hyper-Wiener index of connected graphs is discussed,the graph transformations of connected graphs is investigated and the extremal graphs of hyper-Wiener index of unicyclic graphs is proved.
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