| Authors | A. Ghalavand and A. R. Ashrafi |
|---|---|
| Journal | Rad HAZU, Matematičke znanosti |
| Page number | 1-14 |
| Volume number | 24 |
| Paper Type | Full Paper |
| Published At | 2020 |
| Journal Grade | ISI |
| Journal Type | Typographic |
| Journal Country | Croatia |
Abstract
Let G be a simple and undirected graph with Laplacian polynomial ψ(G, λ) = Σk=0n (-1)n-kck(G)λk. In this paper, exact formulas for the coefficient cn-4 and the number of 4-matchings with respect to the Zagreb indices of a given tree are presented. The chemical trees with first through the fifteenth greatest cn-4-values are also determined.