On independent k-domination number of Hamming graphs

Document Type : Original paper

Author

Department of Mathematical Sciences, Sharif University of Technology, P. O. Box 11155-9415, Tehran, Iran

Abstract

A subset S of the vertices of a graph is called a k-dominating set if every vertex outside S has at least k neighbors in S. If a k-dominating set is an independent subset of the vertices, then the set is called an independent k-dominating set. The size of the smallest such set is called the independent k-domination number of the graph. In this paper, we derive a lower bound on the independent k-domination number of Hamming graphs. For some sets of parameters, we show that this lower bound is exact.

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