The extremal irregularity of connected graphs with given number of pendant vertices
The extremal irregularity of connected graphs with given number of pendant vertices
复制标题
具有给定数量的下垂顶点的连通图的极值不规则性
DOI:
10.21136/cmj.2022.0125-21
复制
发表时间:
2022-04
影响因子:
0.5
通讯作者:
Qiuyun Zhu
中科院分区:
文献类型:
--
作者:
Xiaoqian Liu;Xiaodan Chen;Junli Hu;Qiuyun Zhu
The irregularity of a graph G = (V, E) is defined as the sum of imbalances |du − dv| over all edges uv ∈ E, where du denotes the degree of the vertex u in G. This graph invariant, introduced by Albertson in 1997, is a measure of the defect of regularity of a graph. In this paper, we completely determine the extremal values of the irregularity of connected graphs with n vertices and p pendant vertices (1 6 p 6 n − 1), and characterize the corresponding extremal graphs.
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DOI:
10.1016/j.endm.2013.11.026
发表时间:
2014-01
期刊:
Electron. Notes Discret. Math.
影响因子:
--
作者:
R. Nasiri;G. Fath-Tabar
通讯作者:
R. Nasiri;G. Fath-Tabar
DOI:
--
发表时间:
2011
期刊:
arXiv: Algebraic Geometry
影响因子:
--
作者:
G. Fath-Tabar
通讯作者:
G. Fath-Tabar
影响因子:
0.8
作者:
Henning, Michael A.;Rautenbach, Dieter
通讯作者:
Rautenbach, Dieter
影响因子:
5.6
作者:
Gutman, I;Hansen, P;Mélot, H
通讯作者:
Mélot, H
影响因子:
--
作者:
I. Gutman
通讯作者:
I. Gutman