Results 11 to 20 of about 24,344 (204)

ON HYBRID INTERIOR IDEALS IN SEMIGROUPS

open access: yesПроблемы анализа, 2019
In this paper, we introduce the notion of hybrid interior ideals and hybrid characteristic interior ideals of a semigroup. We obtain some equivalent conditions for a hybrid structure to be a hybrid interior ideal of a semigroup.
K. Porselvi, B. Elavarasan
doaj   +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

F-regular semigroups

open access: yesJournal of Algebra, 2004
A regular semigroup \(S\) is called \(F\)-regular if there exists a group congruence \(\rho\) on \(S\) such that every \(\rho\)-class contains a greatest element with respect to the natural partial order on \(S\). Continuing many investigations of \(F\)-regular semigroups, the authors characterize them and give a new representation of such semigroups ...
Smith, M. Paula Marques   +2 more
openaire   +4 more sources

Proper Regular Semigroups [PDF]

open access: yesProceedings of the American Mathematical Society, 1978
In a recent paper, D. B. McAlister gave several characterizations of proper inverse semigroups. In this paper, the concept of proper is extended to the class of regular semigroups. This is done by requiring that the set of idempotents of the semigroup coincides with the kernel of the minimum group congruence on the semigroup.
openaire   +1 more source

Nuclearity of semigroup C*-algebras and the connection to amenability [PDF]

open access: yes, 2012
We study C*-algebras associated with subsemigroups of groups. For a large class of such semigroups including positive cones in quasi-lattice ordered groups and left Ore semigroups, we describe the corresponding semigroup C*-algebras as C*-algebras of ...
Li, Xin
core   +1 more source

New Properties of Anti Fuzzy Ideals of Regular Semigroups

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2019
In this article, we study some properties of anti-fuzzy sub-semigroup, anti fuzzy left (right, two sided) ideal, anti fuzzy ideal, anti fuzzy generalized bi-ideal, anti fuzzy interior ideals and anti fuzzy two sided ideal of regular semigroup.
Samah H. Asaad, Akram S. Mohammed
doaj   +1 more source

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   +1 more source

Intersectional soft gamma ideals of ordered gamma semigroups

open access: yesAIMS Mathematics, 2021
In contemporary mathematics, parameterization tool like soft set theory precisely tackle complex problems of economics and engineering. In this paper, we demonstrate a novel approach of soft set theory i.e., intersectional soft (int-soft) sets of an ...
Faiz Muhammad Khan   +4 more
doaj   +1 more source

Congruences on regular semigroups [PDF]

open access: yesTransactions of the American Mathematical Society, 1986
Let S S be a regular semigroup and let ρ \rho be a congruence relation on S S . The kernel of ρ \rho , in notation ker ⁡ ρ \ker \rho , is the union of the idempotent ρ \rho -classes.
Pastijn, Francis, Petrich, Mario
openaire   +2 more sources

Large Aperiodic Semigroups [PDF]

open access: yes, 2014
The syntactic complexity of a regular language is the size of its syntactic semigroup. This semigroup is isomorphic to the transition semigroup of the minimal deterministic finite automaton accepting the language, that is, to the semigroup generated by ...
A. Kisielewicz   +11 more
core   +3 more sources

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