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图的反全符号控制数
引用本文:徐保根,汤友亮,罗茜. 图的反全符号控制数[J]. 江西科学, 2011, 29(5): 546-549
作者姓名:徐保根  汤友亮  罗茜
作者单位:华东交通大学基础科学学院,江西南昌,330013
基金项目:国家自然科学基金(11061014,10661007)
摘    要:设G=(V,E)是一个非空图,对于一个函数f∶V(G)∪E(G)→{-1,1},则称f的权重为w(f)=∑x∈V(G)∪E(G)f(x)。若x∈V(G)∪E(G),定义f[x]=∑y∈NT[x]f(y)。如果对所有的x∈V(G)∪E(G)都有f[x]≤1,则称f是图G的一个反全符号控制函数。G的反全符号控制数定义为γ*...

关 键 词:反全符号控制函数  反全符号控制数  全符号控制函数  全符号控制数

On Reverse Total Signed Domination in Graphs
XU Bao-gen,TANG You-liang,LUO Xi. On Reverse Total Signed Domination in Graphs[J]. Jiangxi Science, 2011, 29(5): 546-549
Authors:XU Bao-gen  TANG You-liang  LUO Xi
Affiliation:XU Bao-gen,TANG You-liang,LUO Xi (Department of Mathematics,East China Jiaotong University,Jiangxi Nanchang 330013 PRC)
Abstract:Let G=(V,E) be a nonempty graph,a function fV(G)∪E(G)→{-1,1},is said to be a reverse total signed domination function(RTSDF) of G if f[x]≤1 holds for each x∈V(G)∪E(G),defining the weighing of fw(f)=∑x∈V(G)∪E(G)f(x),f[x]=∑y∈NT[x]f(y).The reverse total signed domination numbers γ*rs(G) of G is defined as γ*rs(G)=max{w(f)|f is a RTSDF of G}.In this paper,we give some upper bounds of the reverse total signed domination numbers of graphs,and determine the reverse total signed domination numbers of paths Pn and star graph K1,n.
Keywords:Reverse total signed domination function  Reverse total signed domination numbers  Total signed domination function  Total signed domination numbers  
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