Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleBasic positively closed classes in three-valued logic.AuthorsMarchenkov, Sergey S.; Chernyshev, Anatoliy V.AbstractBasic positively closed classes are intersections of positively precomplete classes. We prove that three-valued logic contains exactly 79 basic positively closed classes. Each class is described in terms of endomorphism semigroups.SubjectsTERNARY logic; ENDOMORPHISMS; SEMIGROUPS (Algebra); CLOSED operators; UNARY algebrasPublicationDiscrete Mathematics & Applications, 2018, Vol 28, Issue 3, p157ISSN0924-9265Publication typeArticleDOI10.1515/dma-2018-0015