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- W2068273404 abstract "A DD2-pair of a graph G is a pair (D,D2) of disjoint sets of vertices of G such that D is a dominating set and D2 is a 2-dominating set of G. Although there are infinitely many graphs that do not contain a DD2-pair, we show that every graph with minimum degree at least two has a DD2-pair. We provide a constructive characterization of trees that have a DD2-pair and show that K3,3 is the only connected graph with minimum degree at least three for which D ∪ D2 necessarily contains all vertices of the graph." @default.
- W2068273404 created "2016-06-24" @default.
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- W2068273404 date "2013-01-01" @default.
- W2068273404 modified "2023-10-02" @default.
- W2068273404 title "On graphs with disjoint dominating and 2-dominating sets" @default.
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- W2068273404 doi "https://doi.org/10.7151/dmgt.1652" @default.
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