Note on the Reformulated Zagreb Indices of Two Classes of Graphs
Joint Authors
Qu, Tongkun
He, Mengya
Ji, Shengjin
Li, Xia
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-4, 4 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-02-10
Country of Publication
Egypt
No. of Pages
4
Main Subjects
Abstract EN
The reformulated Zagreb indices of a graph are obtained from the original Zagreb indices by replacing vertex degrees with edge degrees, where the degree of an edge is taken as the sum of degrees of its two end vertices minus 2.
In this paper, we obtain two upper bounds of the first reformulated Zagreb index among all graphs with p pendant vertices and all graphs having key vertices for which they will become trees after deleting their one key vertex.
Moreover, the corresponding extremal graphs which attained these bounds are characterized.
American Psychological Association (APA)
Qu, Tongkun& He, Mengya& Ji, Shengjin& Li, Xia. 2020. Note on the Reformulated Zagreb Indices of Two Classes of Graphs. Journal of Chemistry،Vol. 2020, no. 2020, pp.1-4.
https://search.emarefa.net/detail/BIM-1181797
Modern Language Association (MLA)
Qu, Tongkun…[et al.]. Note on the Reformulated Zagreb Indices of Two Classes of Graphs. Journal of Chemistry No. 2020 (2020), pp.1-4.
https://search.emarefa.net/detail/BIM-1181797
American Medical Association (AMA)
Qu, Tongkun& He, Mengya& Ji, Shengjin& Li, Xia. Note on the Reformulated Zagreb Indices of Two Classes of Graphs. Journal of Chemistry. 2020. Vol. 2020, no. 2020, pp.1-4.
https://search.emarefa.net/detail/BIM-1181797
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1181797