On the complement graph and defensive k-alliances

被引:20
作者
Sigarreta, J. M. [2 ]
Bermudo, S. [1 ]
Fernau, H. [3 ]
机构
[1] Pablo Olavide Univ, Dept Econ Quantitat Methods & Econ Hist, Seville 41013, Spain
[2] Autonomous Univ Guerrero, Fac Math, Acapulco, Guerrero, Mexico
[3] Univ Trier, Abt Informat, Fachbereich 4, D-54286 Trier, Germany
关键词
Defensive alliances; Complement graph; Domination number; Independent set; NP-completeness;
D O I
10.1016/j.dam.2008.12.006
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In this paper, we obtain several tight bounds of the defensive k-alliance number in the complement graph from other parameters of the graph. In particular, we investigate the relationship between the alliance numbers of the complement graph and the minimum and maximum degree, the domination number and the isoperimetric number of the graph. Moreover, we prove the NP-completeness of the decision problem underlying the defensive k-alliance number. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:1687 / 1695
页数:9
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