Results 31 to 40 of about 129 (78)

Generalized Bi-ideal of Ordered Semigroup Related to Intuitionistic Fuzzy Point [PDF]

open access: yesMatrix Science Mathematic, 2017
Intuitionistic fuzzy generalized bi-ideals play an important role in the study of ordered semigroups. In this paper, we try obtain more general form of intuitionistic fuzzy generalized bi-ideal of an ordered semigroup.
Hidayat Ullah Khan   +3 more
doaj   +1 more source

On categorical aspects of S -quantales

open access: yesOpen Mathematics, 2018
S-quantales are characterized as injective objects in the category of S-posets with respect to certain class of homomorphisms that are order-preserving mappings. This paper is devoted to exhibitions of categorical structures on S-quantales.
Zhang Xia, Zhou Yunyan
doaj   +1 more source

On Unitary down-closed regular monomorphisms of pomonoid actions [PDF]

open access: yes, 2018
In this paper we characterize injective objects in the category of S-posets and S-poset maps for a pomonoid S, with respect to the class of unitary down- closed embeddings.
Farsad, Farideh, Madanshekaf, Ali
core  

On an equivalence between regular ordered Γ-semigroups and regular ordered semigroups

open access: yesOpen Mathematics, 2020
In this paper, we develop a technique which enables us to obtain several results from the theory of Γ-semigroups as logical implications of their semigroup theoretical analogues.
Çullhaj Fabiana, Krakulli Anjeza
doaj   +1 more source

Quasi injectivity and θ-internal order sum in partially ordered acts [PDF]

open access: yes, 2019
Injectivity (weakly injectivity) of objects is an important concept which category theory inherited from homological and commutative algebra. One of the useful kinds of weakly injectivity is quasi injectivity. In this paper, we study the relation between
Yavari, Mahdieh
core  

Fuzzy Quasi-Ideals of Ordered Semigroups [PDF]

open access: yes, 2011
. In this paper, we characterize ordered semigroups in terms of fuzzy quasi-ideals. We characterize left simple, right simple and completely regular ordered semigroups in terms of fuzzy quasi-ideals.
Muhammad Shabir, Asghar Khan
core  

Some properties of residuated lattices [PDF]

open access: yes, 2003
We investigate some (universal algebraic) properties of residuated lattices -algebras which play the role of structures of truth values of various systems of fuzzy logic.
Radim Bělohlávek, Ostrava
core  

Fuzzy ideals of ordered semigroups with fuzzy orderings

open access: yesOpen Mathematics, 2016
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
Huang Xiaokun, Li Qingguo
doaj   +1 more source

P A ON (m, n)-IDEALS OF AN ORDERED SEMIGROUP [PDF]

open access: yes, 2015
: In this paper we introduce the concept of (m, n)-simple ordered semigroups extending the notion of simple ordered semigroups, and prove that an ordered semigroup (S, ·, ≤) does not contain proper (m, n)-ideals if and only if it is both (m, 0)-simple ...
Thawhat Changphas
core  

HOMOTHETIC INTERVAL ORDERS [PDF]

open access: yes, 2008
We give a characterization of the non-empty binary relations  on a N∗-set A such that there exist two morphisms of N∗-sets u1, u2: A → R+ verifying u1 ≤ u2 and x  y ⇔ u1(x)>u2(y). They are called homothetic interval orders.
Marc Le Menestrel
core  

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