图的弱罗马控制数是图的弱罗马控制函数的最小权,记为γr(G).用逻辑推理和逐步分析法,刻画了弱罗马控制数等于最小控制数加1的图(即γr(G)=γ(G)+1)的特征
The weak Roman domination number of G,denoted by γr(G),is the minimum weight of a weak Roman dominating function in G.The graphs γr(G)=γ(G)+1 was characterized by the devices of logicality and analysis.