Results 11 to 20 of about 366 (139)

Some Characterizations for Approximate Biflatness of Semigroup Algebras

open access: yesJournal of Mathematics, 2023
In this paper, we study an approximate biflatness of l1S, where S is a Clifford semigroup. Indeed, we show that a Clifford semigroup algebra l1S is approximately biflat if and only if every maximal subgroup of S is amenable, ES is locally finite, and l1S
N. Razi, A. Sahami
doaj   +3 more sources

Pseudo-amenability and pseudo-contractibility of restricted semigroup algebra

open access: yesAnnales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2018
In this article the pseudo-amenability and pseudo-contractibility of restricted semigroup algebra lr1(S) and semigroup algebra, l1(Sr) on restricted semigroup, Sr are investigated for different classes of inverse semigroups such as Brandt semigroup, and ...
Olufemi Johnson Ogunsola   +1 more
doaj   +3 more sources

Semigroup of k-bi-Ideals of a Semiring with Semilattice Additive Reduct

open access: yesDemonstratio Mathematica, 2016
We associate a semigroup B(S) to every semiring S with semilattice additive reduct, namely the semigroup of all k-bi-ideals of S; and such semirings S have been characterized by this associated semigroup B(S). A semiring S is k-regular if and only if B(S)
Bhuniya A. K., Jana K.
doaj   +2 more sources

Derivations on Certain Semigroup Algebras [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2007
In the present paper we give a partially negative answer to a conjecture of Ghahramani, Runde and Willis. We also discuss the derivation problem for both foundation semigroup algebras and Clifford semigroup algebras.
M. Lashkarizadeh Bami
doaj   +1 more source

On continuity of homomorphisms between topological Clifford semigroups

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2014
Generalizing an old result of Bowman we prove that a homomorphism $f:X\to Y$ between topological Clifford semigroups is continuous if • the idempotent band $E_X=\{x\in X:xx=x\}$ of $X$ is a $V$-semilattice; • the topological Clifford semigroup
I. Pastukhova
doaj   +3 more sources

On the Topology of a Compact Inverse Clifford Semigroup [PDF]

open access: yesTransactions of the American Mathematical Society, 1976
A description of the topology of a compact inverse Clifford semigroup S is given in terms of the topologies of its subgroups and that of the semilattice X of idempotents.
D. P. Yeager
openaire   +3 more sources

Characterizing pure, cryptic and Clifford inverse semigroups [PDF]

open access: yesCzechoslovak Mathematical Journal, 2014
The paper investigates inverse semigroups.
Petrich, Mario
openaire   +3 more sources

Some Study of Semigroups of h-Bi-Ideals of Semirings.

open access: yesComput Math Methods Med, 2021
Semigroups are generalizations of groups and rings. In the semigroup theory, there are certain kinds of band decompositions which are useful in the study of the structure of semigroups. This research will open up new horizons in the field of mathematics by aiming to use semigroup of h‐bi‐ideal of semiring with semilattice additive reduct.
Anjum R   +5 more
europepmc   +2 more sources

Bi-ideals in Clifford ordered semigroup

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2013
In this paper we characterize both the Cliord and left Cliord ordered semigroups by their bi-ideals and quasi-ideals. Also we characterize principal bi-ideal generated by an ordered idempotent in a completely regular ordered semigroup.
Hansda, Kalyan
openaire   +2 more sources

Module Amenability of Semigroup Algebras under Certain Module Actions

open access: yesJournal of Mathematical Extension, 2014
In this paper we define a congruence ∼ on inverse semigroup S such that amenability of S is equivalent to amenability of S/ ∼. We study module amenability of semigroup algebra l 1 (S/ ∼) when S is an inverse semigroup with idempotents E and prove ...
A. Sahleh, S. Grailo Tanha
doaj   +1 more source

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