The hyper-Zagreb index of cacti with perfect matchings

Let be a simple connected graph. The hyper-Zagreb index is defined as . A connected graph is a cacti if all blocks of are either edges or cycles. Let be the set of cacti of order with a perfect matching and cycles. In this paper, we determine sharp upper bounds of the hyper-Zagreb index of cacti amo...

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Bibliographic Details
Main Authors: Hechao Liu, Zikai Tang
Format: Article
Language:English
Published: Taylor & Francis Group 2020-01-01
Series:AKCE International Journal of Graphs and Combinatorics
Subjects:
Online Access:http://dx.doi.org/10.1016/j.akcej.2019.03.022