Results 11 to 20 of about 19,208 (202)

Congruences on regular semigroups [PDF]

open access: yesTransactions of the American Mathematical Society, 1986
Let S S be a regular semigroup and let ρ \rho be a congruence relation on S S . The kernel of ρ \rho , in notation ker ⁡ ρ \ker \rho , is the union of the idempotent ρ \rho -classes.
Pastijn, Francis, Petrich, Mario
openaire   +2 more sources

RIGHT PURE UNI-SOFT IDEALS OF ORDERED SEMIGROUPS [PDF]

open access: yesMatrix Science Mathematic, 2018
In this paper, we initiate the study of pure uni-soft ideals in ordered semigroups. The soft version of right pure ideals in ordered semigroups is considered which is an extension of the concept of right pure ideal in ordered semigroups. We also give the
Raees Khan   +3 more
doaj   +1 more source

Fermatean fuzzy semi-prime ideals of ordered semigroups

open access: yesTopological Algebra and its Applications, 2023
Fermatean fuzzy sets (FFSs) are invented to resolve the underlying limitations of intuitionistic fuzzy sets and Pythagorean fuzzy sets. The major goal of this study is to introduce Fermatean fuzzy semi-prime ideals of ordered semigroups.
Adak Amal Kumar   +2 more
doaj   +1 more source

The algebra of adjacency patterns: Rees matrix semigroups with reversion [PDF]

open access: yes, 2009
We establish a surprisingly close relationship between universal Horn classes of directed graphs and varieties generated by so-called adjacency semigroups which are Rees matrix semigroups over the trivial group with the unary operation of reversion.
D.M. Clark   +18 more
core   +2 more sources

On Vn-semigroups

open access: yesOpen Mathematics, 2015
In this paper, we give some new characterizations of orthodox semigroups in terms of the set of inverses of idempotents. As a generalization, a new class of regular semigroups, namely Vn-semigroups, is introduced.
Gu Ze, Tang Xilin
doaj   +1 more source

Neutrosophic ℵ −bi-ideals in semigroups [PDF]

open access: yesNeutrosophic Sets and Systems, 2020
In this paper, we introduce the notion of neutrosophic ℵ-bi-ideal for a semigroup. We infer different semigroups using neutrosophic ℵ -bi-ideal structures.
K. Porselvi   +3 more
doaj   +1 more source

Amenability and geometry of semigroups [PDF]

open access: yes, 2017
We study the connection between amenability, Følner conditions and the geometry of finitely generated semigroups. Using results of Klawe, we show that within an extremely broad class of semigroups (encompassing all groups, left cancellative semigroups ...
Gray, Robert, Kambites, Mark
core   +1 more source

On 𝓠-regular semigroups

open access: yesOpen Mathematics, 2018
In this paper, we give some characterizations of 𝓠-regular semigroups and show that the class of 𝓠-regular semigroups is closed under the direct product and homomorphic images.
Feng Xinyang
doaj   +1 more source

New Generalizations of sup-Hesitant Fuzzy Ideals of Semigroups

open access: yesInternational Journal of Analysis and Applications, 2022
As general concepts of sup-hesitant fuzzy right (resp., left, interior, two-sided) ideals of semigroups, the concepts of sup+α-hesitant fuzzy right (resp., left, interior, two-sided) ideals and sup-β-hesitant fuzzy right (resp., left, interior, two-sided)
Uraiwan Jittburus   +5 more
doaj   +1 more source

Flows on Classes of Regular Semigroups and Cauchy Categories

open access: yesJournal of Mathematics, 2019
We consider the structure of the flow monoid for some classes of regular semigroups (which are special case of flows on categories) and for Cauchy categories.
Suha Ahmed Wazzan
doaj   +1 more source

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