Quasivarieties of distributivep-algebras

A counterexample is given to show that not all quasivarieties of distributivep-algebra lie between two consecutive varieties. It is shown that there are no strict relatively congruence distributive quasivarieties of distributivep-algebras. The relative congruence extension property in the class of distributivep-algebras is studied. It is proved that only quasivarieties which are varieties possess this property.Presented by J. Berman.This research is part of the author's dissertation done at Iowa State University under the supervision of Dr. Clifford Bergman.