Function ∪-semigroups
Function spaces and adjoints.
Function spaces and fixed point properties: a Galois connection.
Functional Completeness and Automorphisms.I.
Functional completeness in pseudocomplemented de Morgan algebras
Functional monadic -valued Łukasiewicz algebras
Some functional representation theorems for monadic -valued Łukasiewicz algebras (qLk-algebras, for short) are given. Bearing in mind some of the results established by G. Georgescu and C. Vraciu (Algebre Boole monadice si algebre Łukasiewicz monadice, Studii Cercet. Mat. 23 (1971), 1027–1048) and P. Halmos (Algebraic Logic, Chelsea, New York, 1962), two functional representation theorems for qLk-algebras are obtained. Besides, rich qLk-algebras are introduced and characterized. In addition,...
Functorial approximation to the lateral completion in archimedean lattice-ordered groups with weak unit
Functorial rings of quotients 2: the ring of hyper-fractions.
Fundamental order relations on inverse semigroups and on their generalizations.
Fundamental preorders and partial orders on completely [0] simple semigroups.
Further development of Chebyshev type inequalities for Sugeno integrals and T-(S-)evaluators
In this paper further development of Chebyshev type inequalities for Sugeno integrals based on an aggregation function and a scale transformation is given. Consequences for T-(S-)evaluators are established.
Further results on neutral consensus functions
We use a set theoretic approach to consensus by viewing an object as a set of smaller pieces called “bricks”. A consensus function is neutral if there exists a family D of sets such that a brick s is in the output of a profile if and only if the set of positions with objects that contain s belongs to D. We give sufficient set theoretic conditions for D to be a lattice filter and, in the case of a finite lattice, these conditions turn out to be necessary. Ourfinal result, which involves a finite...
Fuzzy associative -ideals of IS-algebras.
Fuzzy BCI-subalgebras with interval-valued membership functions.
Fuzzy concepts defined via residuated maps
Fuzzy filter spectrum of a BCK algebra.
Fuzzy filters in BCI-algebras.
Fuzzy ideals extensions of ordered semigroups.
Fuzzy ideals in BE-algebras.
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...