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Displaying similar documents to “Score lists of oriented tripartite graphs.”

Products Of Digraphs And Their Competition Graphs

Martin Sonntag, Hanns-Martin Teichert (2016)

Discussiones Mathematicae Graph Theory

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If D = (V, A) is a digraph, its competition graph (with loops) CGl(D) has the vertex set V and {u, v} ⊆ V is an edge of CGl(D) if and only if there is a vertex w ∈ V such that (u, w), (v, w) ∈ A. In CGl(D), loops {v} are allowed only if v is the only predecessor of a certain vertex w ∈ V. For several products D1 ⚬ D2 of digraphs D1 and D2, we investigate the relations between the competition graphs of the factors D1, D2 and the competition graph of their product D1 ⚬ D2.