Splitting in relation algebras
H. Andr{éka, Roger D. Maddux, I. N{émeti · Proceedings of the American Mathematical Society · 1991
We define a way, which we call splitting, of getting new relation algebras from old ones. We characterize those algebras to which splitting can be applied. We show how to split representable relation algebras in order to obtain nonrepresentable ones, and we give many examples.