Commutative semi-primary -semigroups
Commutative zeropotent semigroups with few prime ideals
We construct an infinite commutative zeropotent semigroup with only two prime ideals.
Completely semisimple semigroups whose idempotents from a tree.
Congruence relations on left canonic semigroups.
Correction to my paper: “Commutative semi-primary -semigroups”
Correction to my paper on structure and ideal theory of commutative semigroups
Covering in the set of principal ideals in the semigroup of binary relations.
Decompositions of semigroups induced by identities.
Decompositions of semigroups with zero.
Divisible and exponent actions of semigroups.
Ein fast-Jordan-Hölder Satz für Fastideale.
Erratum to the paper "Semigroups containing covered one-sided ideals"
Extensions idéales strictes et pures d'un demi-groupe
Extensions par union
Faithful linear representations of bands.
Filtre sur un monoide fini.
Finiteness theorems for factorizations.
Fully fuzzy prime semigroups.
Function minimum associated to a congruence on integral n-tuple space.
Fuzzy ideals of ordered semigroups with fuzzy orderings
The purpose of this paper is to introduce the notions of ∈, ∈ ∨qk-fuzzy ideals of a fuzzy ordered semigroup with the ordering being a fuzzy relation. Several characterizations of ∈, ∈ ∨qk-fuzzy left (resp. right) ideals and ∈, ∈ ∨qk-fuzzy interior ideals are derived. The lattice structures of all ∈, ∈ ∨qk-fuzzy (interior) ideals on such fuzzy ordered semigroup are studied and some methods are given to construct an ∈, ∈ ∨qk-fuzzy (interior) ideals from an arbitrary fuzzy subset. Finally, the characterizations...