k-rainbow domatic numbers
k-rainbow domatic numbers
复制标题
k-彩虹域数
DOI:
10.1016/j.dam.2012.01.010
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发表时间:
2012
影响因子:
1.1
通讯作者:
Colton Magnant
中科院分区:
文献类型:
--
作者:
Shinya Fujita;Michitaka Furuya;Colton Magnant
A k-rainbow dominating function of a graph is a function f from the vertices V(G) to 2[k]such that, for all v∈V(G), either f(v)≠0̸ or ⋃u∈N[v]f(u)={1,…,k}. The k-rainbow domatic number drk(G) is the maximum integer d such that there exists a set of k-rainbow dominating functions f1,f2,…,fdwith ∑i=1d|fi(v)|≤k for all v∈V(G). We study thek-rainbow domatic number by finding this number for some classes of graphs and improving upon some known general bounds.