Directoid as a generalization of semilattice was introduced by J.Ježek and R.Quackenbush. We modify the concept of pseudocomplement for directoids and study several properties: axiomatization, Glivenko congruence and boolean elements
Directoid as a generalization of semilattice was introduced by J.Ježek and R.Quackenbush. We modify the concept of pseudocomplement for directoids and study several properties: axiomatization, Glivenko congruence and boolean elements (en)