ThmDex – An index of mathematical definitions, results, and conjectures.
Set of symbols
Alphabet
Deduction system
Theory
Zermelo-Fraenkel set theory
Set
Binary cartesian set product
Binary relation
Binary endorelation
Digraph
Definition D4527
Node set
Formulation 0
Let $G = (X, \mathcal{E})$ be a D2696: Digraph.
Then $X$ is the node set in $G$.