A term in graph theory.
A graph, in graph theory, is an entity that consists of two things:
The arcs in E are pairs (A,B) where both A and B belong to (or are "taken from") V.
If the graph is a directed graph, then the arcs in E will be directed. If the graph is an undirected graph, then the arcs in E will have no implied direction.
Graph theory has a few notions which are explained elsewhere in this glossary: