Studies On Fuzzy Theories On Some Semigroups

In this paper, some fuzzy theories on some semigroups are studied. First, weuse fuzzy congruence triple to characterize fuzzy congruence on a completely simplesemigroup. A minimal element and a maximal element of K-class on the lattices offuzzy congruences are finded. Second, we study fuzzy congruences, fuzzy ideals oncompletely regular semigroups, ordered semigroups, respectively.