Clique matrix

Clique matrix --- матрица клик.

Let [math]\displaystyle{ {\mathcal C}(G) = \{C_{1}, \ldots, C_{k}\} }[/math] be the maximal cliques of a graph [math]\displaystyle{ G }[/math]. The clique matrix [math]\displaystyle{ C(G) }[/math] of [math]\displaystyle{ G }[/math] is a [math]\displaystyle{ (0,1) }[/math]-matrix [math]\displaystyle{ (c_{ij}) }[/math] with entry

[math]\displaystyle{ c_{ij} = \left \{\begin{array}{l} 1 \mbox{, if } v_{i} \in C_{j} \\ 0\mbox{, otherwise} \end{array} \right. }[/math]