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| 图的Augmented Zagreb 指数的界 | |
| 作者姓名： | 周后卿 |
| 作者单位： | 邵阳学院数学系, 湖南 邵阳 422000 |
| 基金项目： | 国家自然科学基金(Grant No.61672356),邵阳学院教学改革研究项目(Grant No.2017JG19). |
| 摘 要： | Let G =(V, E) be a simple connected graph with n(n ≥ 3) vertices and m edges,with vertex degree sequence {d1, d2,..., dn}. The augmented Zagreb index is defined as AZI =AZI(G)=∑ij∈E(didj/di+dj-2)3. Using the properties of inequality, we investigate the bounds of AZI for connected graphs, in particular unicyclic graphs in this paper, some useful conclusions are obtained. |
| 关 键 词： | augmented Zagreb index connected graph unicyclic graph BOUND |
| 收稿时间： | 2020-02-20 |
| 修稿时间： | 2020-09-27 |
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