A Note on Isolate Domination Number of a Cubic Graph
Keywords:Domination Number, Isolate Domination Number, Total Domination Number, Cubic Graphs, Private Neighbour.
In this note we provide a solution to the problem “Find a structural characterization of cubic graph for which the isolate domination number equals one plus its domination number.” We show that if G is a cubic graph of order n and if 6 | n, then the isolate domination number of G is the same as the domination number of G. We also prove that if G is a connected cubic graph with diam(G) > 2, then the isolate domination number is the same as the domination number.
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