Assertion: graph's vertex | /r/HasProperty | fundamental unit
Facets:
value: more specifically in graph theory
type: OTHER
Source sentences:
text: In mathematics, and more specifically in graph theory, a vertex (plural vertices) or node is the fundamental unit of which graphs are formed: an undirected graph consists of a set of vertices and a set of edges (unordered pairs of vertices), while a directed graph consists of a set of vertices and a set of arcs (ordered pairs of vertices).