Positively closed classes of three-valued logic
Sergey Seraphimovich Marchenkov · Journal of Applied and Industrial Mathematics · 2014
We state some theoretical prerequisites and indicate approaches to constructing a positive classification of the set of functions of k -valued logic. Basing on this, we find all 194 positively closed classes of three-valued logic. We describe them using the semigroups of endomorphisms and indicating positive bases.