Chordal bipartite graph

Chordal bipartite graph --- хордальный двудольный граф.

A graph [math]\displaystyle{ G }[/math] is a chordal bipartite graph if [math]\displaystyle{ G }[/math] is bipartite and any induced cycle in [math]\displaystyle{ G }[/math] is of length 4. Note that a chordal bipartite graph is not a chordal graph.