Results 21 to 30 of about 143,321 (277)

Nilpotent Semigroups and Semigroup Algebras

open access: yesJournal of Algebra, 1994
First, the structure of nilpotent semigroups is discussed. If \(S\) is a completely 0-simple semigroup over a maximal group \(G\), then \(S\) is nilpotent if and only if \(G\) is nilpotent and \(S\) is an inverse semigroup. The main results on semigroup algebras are very interesting, but technical; they examine the prime homomorphic images of semigroup
Jespers, E., Okninski, J.
openaire   +1 more source

Some faces of Smarandache semigroups' concept in transformation semigroups' approach [PDF]

open access: yes, 2007
In the following text, the main aim is to distinguish some relations between Smarad- che semigroups and (topological) transformation semigroups areas.
Ayatollah, Zadeh Shirazi, Hosseini, A.
core   +1 more source

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

Dimensional contraction via Markov transportation distance [PDF]

open access: yes, 2013
It is now well known that curvature conditions \`a la Bakry-Emery are equivalent to contraction properties of the heat semigroup with respect to the classical quadratic Wasserstein distance.
Bolley, François   +2 more
core   +5 more sources

Inverse Semigroup C*-Algebras Associated with Left Cancellative Semigroups [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 2012
To each discrete left cancellative semigroup S one may associate an inverse semigroup Il(S), often called the left inverse hull of S. We show how the full and reduced C*-algebras of Il(S) are related to the full and reduced semigroup C*-algebras for S ...
M. Norling
semanticscholar   +1 more source

Cross-connections and variants of the full transformation semigroup [PDF]

open access: yes, 2017
Cross-connection theory propounded by K. S. S. Nambooripad describes the ideal structure of a regular semigroup using the categories of principal left (right) ideals.
Muhammed, P. A. Azeef
core   +1 more source

On the Semigroup of Bi-Ideals of an Ordered Semigroup

open access: yesKragujevac Journal of Mathematics, 2023
The purpose of this paper is to characterize an ordered semigroup S in terms of the properties of the associated semigroup B(S) of all bi-ideals of S. We show that an ordered semigroup S is a Clifford ordered semigroup if and only if B(S) is a semilattice.
Mallick, Susmita, Hansda, Kalyan
openaire   +1 more source

On Minimal Fuzzy Ideals of Semigroups

open access: yesJournal of Mathematics, 2013
The present paper contains the sufficient condition of a fuzzy semigroup to be a fuzzy group using fuzzy points. The existence of a fuzzy kernel in semigroup is explored.
Madad Khan   +2 more
doaj   +1 more source

Linear growth for semigroups which are disjoint unions of finitely many copies of the free monogenic semigroup [PDF]

open access: yes, 2015
We show that every semigroup which is a finite disjoint union of copies of the free monogenic semigroup (natural numbers under addition) has linear growth.
Abughazalah, Nabilah, Etingof, Pavel
core   +2 more sources

Conjugation in semigroups

open access: yesJournal of Algebra, 2014
The action of any group on itself by conjugation and the corresponding conjugacy relation play an important role in group theory. There have been several attempts to extend the notion of conjugacy to semigroups. In this paper, we present a new definition of conjugacy that can be applied to an arbitrary semigroup and it does not reduce to the universal ...
João Araújo   +2 more
openaire   +3 more sources

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