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2012-11-15
On Wiener polarity index of cactus graphs
Nan ChenWen-Xue DuYi-Zheng Fan
文献摘要
The Wiener polarity index of a graph G is the number of unordered pairs of vertices u, v such that the distance between u and v is 3. In this paper we give an explicit formula for the Wiener polarity index of cactus graphs. We also deduce formulas for some special cactus graphs.
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