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图的Fractional边全控制 被引量:1

Fractional Edge Total Domination Numbers in Graphs
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摘要 设G=(V,E)是一个无孤立边的图,一个实值函数f:E(G)→[0,1]若对所有的边e∈E(G),均有Σe∈N(e)f(e)≥1成立,则称f为图G的一个F ractional边全控制函数。图G的Fractional边全控制数定义为γft′(G)=min{Σe∈Ef(e)|f为图G的一个Fractional边全控制函数}。确定了一般图的F ractional边全控制数若干界限,同时也研究了几类特殊图F ractional边全控制问题,给出了一些特殊图的Fractional边全控制数。 Let G=(V,E) be a graph without isolated edges, a real function f:E(G)→[0,1] is said to be a fractional edgetotal domination function(FETDF) of G if Σe∈N(e)f(e)≥1 holds for every e∈E(G) edge,then the fractional edge total domination number γft′(G) of G is defined as γft′(G)=min{Σe∈E f(e)|f is a FETDF of G}. This paper determines bounds for the fractional edge total domination numbers of a graph. Meanwhile, it discusses some questions on the fractional edge total domination and gives the fractional edge total domination numbers of some special graphs.
出处 《华东交通大学学报》 2015年第6期106-109,共4页 Journal of East China Jiaotong University
基金 国家自然科学基金项目(11361024) 江西省高校科技落地计划项目(KJLD12067)
关键词 Fractional边全控制函数 Fractional边全控制数 Fractional边全包装函数 Fractional边全包装数 fractional edge total dominating function fractional edge total domination number fractional edge total packing function fractional edge total packing number
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