Results 31 to 40 of about 29,782 (219)

On t-semigroups

open access: yesSemigroup Forum, 1995
We discuss the notion of a t-semigroup (i.e., a semigroup \(S\) in which the relation ``is an ideal of'' is transitive among the ideals of \(S\)). In connection with the congruence extension property (CEP) and the ideal extension property (IEP), we determine that each of these properties for a semigroup \(S\) implies that \(S\) is a t-semigroup.
openaire   +2 more sources

Neutrosophic Left Almost Semigroup [PDF]

open access: yesNeutrosophic Sets and Systems, 2014
In this paper we extend the theory of neutrosophy to study left almost semigroup shortly LAsemigroup. We generalize the concepts of LA-semigroup to form that for neutrosophic LA-semigroup.
Mumtaz Ali   +3 more
doaj  

Reductive compactifications of semitopological semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
We consider the enveloping semigroup of a flow generated by the action of a semitopological semigroup on any of its semigroup compactifications and explore the possibility of its being one of the known semigroup compactifications again.
Abdolmajid Fattahi   +2 more
doaj   +1 more source

A survey on fuzzy semigroups

open access: yesRatio Mathematica, 2021
Fuzzy semigroup is an algebraic extension of semigroup. It has found application in fuzzy coding theory, fuzzy nite state machines and fuzzy languages. In this paper, a comprehensive literature review on fuzzy semigroup theory is realized.
Johnson Aderemi Awolola   +1 more
doaj   +1 more source

Bi-Interior Ideals of Semigroups

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2018
In this paper, as a further generalization of ideals, we introduce the notion of bi-interior ideal as a generalization of quasi ideal, bi-ideal and interior ideal of semigroup and study the properties of bi-interior ideals of semigroup, simple semigroup ...
Rao M. Murali Krishna
doaj   +1 more source

On absorption in semigroups and $n$-ary semigroups [PDF]

open access: yesLogical Methods in Computer Science, 2015
The notion of absorption was developed a few years ago by Barto and Kozik and immediately found many applications, particularly in topics related to the constraint satisfaction problem. We investigate the behavior of absorption in semigroups and n-ary semigroups (that is, algebras with one n-ary associative operation).
openaire   +4 more sources

Chaotic and hypercyclic properties of the quasi-linear Lasota equation

open access: yesOpen Mathematics, 2015
In this paper we describe an explicit solution semigroup of the quasi-linear Lasota equation. By constructing the relationship of this solution semigroup with the translation semigroup we obtain some sufficient and necessary conditions for the solution ...
Hung Cheng-Hung
doaj   +1 more source

Inverse semigroups and varieties of finite semigroups

open access: yesJournal of Algebra, 1987
This third paper of the series of three [see the preceding reviews] is devoted to the study of varieties of finite monoids - classes of (finite) monoids closed under the taking of submonoids, quotients and finite direct products, and in particular the variety Inv generated by finite inverse monoids.
Jean-Eric Pin, Stuart W. Margolis
openaire   +3 more sources

Semiclassical inequalities for Dirichlet and Neumann Laplacians on convex domains

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
Abstract We are interested in inequalities that bound the Riesz means of the eigenvalues of the Dirichlet and Neumann Laplacians in terms of their semiclassical counterpart. We show that the classical inequalities of Berezin–Li–Yau and Kröger, valid for Riesz exponents γ≥1$\gamma \ge 1$, extend to certain values γ<1$\gamma <1$, provided the underlying ...
Rupert L. Frank, Simon Larson
wiley   +1 more source

Quasi-Hyperbolicity and Delay Semigroups

open access: yesAbstract and Applied Analysis, 2016
We study quasi-hyperbolicity of the delay semigroup associated with the equation u′(t)=Bu(t)+Φut, where ut is the history function and (B,D(B)) is the generator of a quasi-hyperbolic semigroup.
Shard Rastogi, Sachi Srivastava
doaj   +1 more source

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