Results 121 to 130 of about 1,200 (220)

Free profinite R-trivial, locally idempotent and locally commutative semigroups

open access: yes, 1999
This paper is concerned with the structure of implicit operations on R intersection with LJ1, the pseudovariety of all R-trivial, locally idempotent and locally commutative semigroups.
Costa, José Carlos
core   +1 more source

Commutative periodic semigroups with the ideal retraction property

open access: yes, 2008
This paper presents a complete characterization of commutative periodic semigroups with the ideal retraction property. These semigroups are those with the property that each ideal is a homomorphic retraction of the semigroup.
J. A. Hildebrant   +3 more
core  

Categorical semigroups

open access: yes, 1972
The main purpose of this paper is to describe some properties of categorical semigroups, commutative semigroups which are categorical at zero, and determine the structure of commutative categorical semigroups.
M. Satyanarayana, F. R. McMorris
core   +1 more source

M-Solid Subvarieties of some Varieties of Commutative Semigroups [PDF]

open access: yes, 1997
∗ The research of the author was supported by the Alexander v. Humboldt-Stiftung.The basic concepts are M -hyperidentities, where M is a monoid of hypersubstitutions.
Koppitz, J.
core  

A Comprehensive Study of Neutrosophic SuperHyper BCI-Semigroups and their Algebraic Significance

open access: yesTransactions on Fuzzy Sets and Systems
This paper introduces and explores the concept of neutrosophic superhyper BCI-semigroups, an advanced algebraic structure integrating neutrosophic logic, superhyper operations, and BCI-algebras into a semigroup framework.
Ajoy Kanti Das   +6 more
doaj  

On the arithmetic of stable domains. [PDF]

open access: yesCommun Algebra, 2021
Bashir A, Geroldinger A, Reinhart A.
europepmc   +1 more source

Membership testing in commutative transformation semigroups

open access: yes, 1988
Given a finite set X of states, a finite set of commuting transformations of X (generators), and another transformation f of X, we analyze the complexity of deciding whether f can be obtained by composition of the generators.
Beaudry, Martin
core   +1 more source

Fundamental solutions for semidiscrete evolution equations via Banach algebras. [PDF]

open access: yesAdv Differ Equ, 2021
González-Camus J, Lizama C, Miana PJ.
europepmc   +1 more source

On homogeneous radicals of semigroup rings of commutative semigroups

open access: yes, 1993
SynopsisAll Archimedean commutative semigroups S are described such that every S-homogeneous hereditary radical is S-normal. It is shown that this result is in a sense unimprovable.
A. V. Kelarev
core   +1 more source

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