Third Smallest Wiener Polarity Index of Unicyclic Graphs
oleh: Wei Fang, Wei Fang, Muhan Ma, FuYuan Chen, FuYuan Chen, Hufeng Dong
| Format: | Article |
|---|---|
| Diterbitkan: | Frontiers Media S.A. 2020-10-01 |
Deskripsi
The Wiener polarity index WP(G) of a graph G is the number of unordered pairs of vertices {u,v} where the distance between u and v is 3. In this paper, we determine the third smallest Wiener polarity index of unicyclic graphs. Moreover, the corresponding extremal graphs are characterized.