Results 1 to 10 of about 22,482 (118)

Left (Right) Regular and Transposition Regular Semigroups and Their Structures

open access: yesMathematics, 2022
Regular semigroups and their structures are the most wonderful part of semigroup theory, and the contents are very rich. In order to explore more regular semigroups, this paper extends the relevant classical conclusions from a new perspective: by ...
Xiaohong Zhang, Yudan Du
exaly   +3 more sources

Finite coverings of semigroups and related structures [PDF]

open access: yesInternational Journal of Group Theory, 2023
For a semigroup $S$, the covering number of $S$ with respect to semigroups, $\sigma_s(S)$, is the minimum number of proper subsemigroups of $S$ whose union is $S$.
Casey Donoven, Luise-Charlotte Kappe
doaj   +1 more source

Varieties Of Permutative Semigroups Closed Under Dominions [PDF]

open access: yesJournal of Algebraic Systems, 2023
In this paper, we partially generalize a result of Isbell from the class of commu- tative semigroups to some generalized class of commutative semigroups by showing that dominion of such semigroups belongs to the same class by using Isbell’s zigzag ...
Humaira Maqbool, Mohammad Bhat
doaj   +1 more source

Epimorphisms, Dominions, and Various Classes of Saturated Semigroups

open access: yesJournal of Mathematics, 2022
In this paper, we discussed some saturated classes of ℋ-commutative semigroups, left (right) regular semigroups, medial semigroups, and paramedial semigroups. The results of this paper significantly extend the long standing result about normal bands that
N. Alam   +4 more
doaj   +1 more source

Generalized Strongly Increasing Semigroups

open access: yesMathematics, 2021
In this work, we present a new class of numerical semigroups called GSI-semigroups. We see the relations between them and other families of semigroups and we explicitly give their set of gaps. Moreover, an algorithm to obtain all the GSI-semigroups up to
E. R. García Barroso   +2 more
doaj   +1 more source

Some Results on Single Valued Neutrosophic Bi-ideals in Ordered Semigroups [PDF]

open access: yesNeutrosophic Sets and Systems, 2021
The importance of the theory of neutrosophy is due to its connections with several fields of sciences, engineering, and technology. So, the aim of this paper is to relate neutrosophy with some algebraic structures mainly the ordered semigroups.
H. Al-Akara, M. Al-Tahan, J. Vimala
doaj   +1 more source

Linear inequations with 5-digit and regularity conditions on ordered ternary semigroups [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2021
We investigate linear inequations with 5-digit of regular elements of ordered ternary semigroups, define the notions of ordered weakly left ideals, ordered weakly right ideals and ordered strong bi-ideals of ordered ternary semigroups, give some ...
Patchara Pornsurat   +2 more
doaj   +1 more source

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

On algebraic geometry over completely simple semigroups [PDF]

open access: yesInternational Journal of Group Theory, 2019
We study equations over completely simple semigroups and describe the coordinate semigroups of irreducible algebraic sets for such semigroups.
Artem Shevlyakov
doaj   +1 more source

On reducible non-Weierstrass semigroups

open access: yesOpen Mathematics, 2021
Weierstrass semigroups are well known along the literature. We present a new family of non-Weierstrass semigroups which can be written as an intersection of Weierstrass semigroups.
García-García Juan Ignacio   +3 more
doaj   +1 more source

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