Given a positive integer , a labeled -digraph is a digraph whose vertex set is .
Labeled Digraph
See also
Digraph, Labeled GraphThis entry contributed by Lorenzo Sauras-Altuzarra
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Sauras-Altuzarra, Lorenzo. "Labeled Digraph." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/LabeledDigraph.html