岳孟田 李文升 李增提 李瑞娟
【摘要】设G=(V,E)是一个无向图,图G的控制数λ(G)为图G的所有控制函数的最小权重。研究蜘蛛图S2,n、S3,n及联圈图2·Cm的控制问题,得到了S2,n、S3,n的控制数的确切值,分别为n和n+1,同时证明了联圈图2·Cm的控制数满足当m0(mod 3)时,γ(2·Cm)=(2m-3)/3;当m1(mod 3)时,γ(2·Cm)=(2m+1)/3;当m2(mod3)时,γ(2·Cm)=(2m-1)/3。
【关键词】控制函数;控制数;蜘蛛图;联圈图
〔中图分类号〕O157.5 〔文献标识码〕A 〔文章编号〕1674-3229(2021)04-0012-03
[参考文献]
[1]O Ore.Theory of Graphs(Volume38)[M].Providence,Rhode Island:American Mathematical Society ColloquiumPublications,1962.
[2]S.Spacapan.The domination number of plane triangula-dons[J].Journal of Combinatorial Theory (Series B),2020(143):42-64.
[3]M Hajian,M A Henning,N J Rad.A new lower bound onthe domination number of a grap[J].Journal of Combinato-rial Optimization,2019(38):721-738.
[4]E Hashemi,M Abdi,A Alhevaz,et al.Domination numberof graphs associated with rings[J].Journal of Algebra andIts Applications,2020(19):1-12.
[5]Xueliang Fu,Yuansheng Yang,Baoqi Jiang.On the domi-nation number of generalized Petersen graph P(n,2)[J].Discrete Math,2009(84):2245- 2251.
[6]S Kiani,H R Maimani,R Nikandish.Some results on thedomination number of a zero-divisor graph[J].Canad MathBull,2014(57):573-578.
[7]E Saygi.On the domination number and the total domina-tion number of Fibonacci cubes[J].Ars Mathematics Con-temporanea,2019(16):245-255.
[收稿日期]2021-10-20
[基金項目]河北省教育厅重点项目(ZD2018074)
[作者简介]岳孟田(1973-),男,硕士,廊坊师范学院理学院教授,研究方向:应用数学。