Cocycle

Cocycle --- коцикл.

Given a graph [math]\displaystyle{ G = (V,E) }[/math] and a subset [math]\displaystyle{ W \subseteq V }[/math] of its vertices, the set of edges in [math]\displaystyle{ G }[/math] linking a vertex of [math]\displaystyle{ W }[/math] to a vertex outside [math]\displaystyle{ W }[/math] is called a cocycle.