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Upper bound on 3-rainbow domination in graphs with minimum degree 2

机译:在最低2度的图表中的3-Rainbow统治上限

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摘要

Let k = 1 be an integer, and let G be a graph. A function f : V(G) - 2({1,...,k}) is a k-rainbow dominating function of G if every vertex x is an element of V(G) with f (x) = empty set satisfies boolean OR(y is an element of NG(x))f (y) = {1,...,k}. The k-rainbow domination number of G, denoted by gamma(rk)(G), is the minimum weight w(f) = Sigma(x is an element of V(G))vertical bar f(x)vertical bar of a k-rainbow dominating function f of G. In this paper, we prove that for every connected graph G of order n = 8 with delta(G) = 2, gamma(r3)(G) = 5n/6. (C) 2018 Elsevier B.V. All rights reserved.
机译:让k;=1是一个整数,G是一个图。函数f:V(G)->;2({1,…,k})是G的k-彩虹支配函数,如果每个顶点x是V(G)的元素,f(x)=空集满足布尔值或(y是NG(x)的元素)f(y)={1,…,k}。G的k-彩虹控制数,用gamma(rk)(G)表示,是G的k-彩虹控制函数f的最小权w(f)=Sigma(x是V(G)的一个元素)垂直条f(x)垂直条8带增量(G);=2,伽马(r3)(G);=5n/6。(C) 2018爱思唯尔B.V.版权所有。

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