Bicritical domination and double coalescence of graphs

被引:3
作者
Krzywkowski, Marcin [1 ,2 ]
Mojdeh, Doost Ali [3 ]
机构
[1] Univ Johannesburg, Dept Pure & Appl Math, Johannesburg, South Africa
[2] Gdansk Univ Technol, Fac Elect Telecommun & Informat, Gdansk, Poland
[3] Univ Mazandaran, Dept Math, Babol Sar, Iran
关键词
Domination; bicritical domination; edge connectivity; coalescence; double coalescence;
D O I
10.1515/gmj-2016-0019
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
A graph is bicritical if the removal of any pair of vertices decreases the domination number. We study the properties of bicritical graphs and their relation with critical graphs, and we obtain results for bicritical graphs with edge connectivity two or three. We also generalize the notion of the coalescence of two graphs and investigate the bicriticality of such graphs.
引用
收藏
页码:399 / 404
页数:6
相关论文
共 9 条
  • [1] [Anonymous], PURE APPL MATH
  • [2] Bicritical domination
    Brigham, RC
    Haynes, TW
    Henning, MA
    Rall, DF
    [J]. DISCRETE MATHEMATICS, 2005, 305 (1-3) : 18 - 32
  • [3] THE DIAMETER OF DOMINATION K-CRITICAL GRAPHS
    FAVARON, O
    SUMNER, DP
    WOJCICKA, E
    [J]. JOURNAL OF GRAPH THEORY, 1994, 18 (07) : 723 - 734
  • [4] Coalescence and criticality of graphs
    Grobler, P. J. P.
    Roux, A.
    [J]. DISCRETE MATHEMATICS, 2013, 313 (10) : 1087 - 1097
  • [5] CHARACTERISTICS OF (γ, 3)-CRITICAL GRAPHS
    Mojdeh, D. A.
    Firoozi, P.
    [J]. APPLICABLE ANALYSIS AND DISCRETE MATHEMATICS, 2010, 4 (01) : 197 - 206
  • [6] Phillips JB, 2000, UTILITAS MATHEMATICA, V58, P129
  • [7] Sumner DP, 1998, MG TXB PUR APPL MATH, V209, P439
  • [8] CRITICAL CONCEPTS IN DOMINATION
    SUMNER, DP
    [J]. DISCRETE MATHEMATICS, 1990, 86 (1-3) : 33 - 46
  • [9] West D. B., 2005, Introduction to Graph Theory