On the Wiener Indices of Trees Ordering by Diameter-Growing Transformation Relative to the Pendent Edges
Joint Authors
Gao, Yubin
Xu, Xiaoxin
Liang, Yueliang
Sang, Yanbin
Source
Mathematical Problems in Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-06
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
The Wiener index of a graph is defined as the sum of distances between all unordered pairs of its vertices.
We found that finite steps of diameter-growing transformation relative to vertices can not always enable the Wiener index of a tree to increase sharply.
In this paper, we provide a graph transformation named diameter-growing transformation relative to pendent edges, which increases Wiener index W(T) of a tree sharply after finite steps.
Then, twenty-two trees are ordered by their Wiener indices, and these trees are proved to be the first twenty-two trees with the first up to sixteenth smallest Wiener indices.
American Psychological Association (APA)
Xu, Xiaoxin& Gao, Yubin& Sang, Yanbin& Liang, Yueliang. 2019. On the Wiener Indices of Trees Ordering by Diameter-Growing Transformation Relative to the Pendent Edges. Mathematical Problems in Engineering،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1197870
Modern Language Association (MLA)
Xu, Xiaoxin…[et al.]. On the Wiener Indices of Trees Ordering by Diameter-Growing Transformation Relative to the Pendent Edges. Mathematical Problems in Engineering No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1197870
American Medical Association (AMA)
Xu, Xiaoxin& Gao, Yubin& Sang, Yanbin& Liang, Yueliang. On the Wiener Indices of Trees Ordering by Diameter-Growing Transformation Relative to the Pendent Edges. Mathematical Problems in Engineering. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1197870
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1197870