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A groupoid that satisfies the left invertive law: $ab\cdot c=cb\cdot a$ is called an AG-groupoid. We extend the concept of left abelian distributive groupoid (LAD) and right abelian distributive groupoid (RAD) to introduce new subclasses of…

Group Theory · Mathematics 2014-03-21 Muhammad Rashad , Imtiaz Ahmad , Muhammad Shah

A groupoid satisfying the left invertive law: $ab\cdot c=cb\cdot a$ is called an AG-groupoid and is a generalization of commutative semigroups. We consider the concept of bi-commutativity in AG-groupoids and thus introduce left commutative…

Group Theory · Mathematics 2019-10-18 Muhammad Rashad , Imtiaz Ahmad , Muhammad Shah , A. B. Saeid

An AG-groupoid is an algebraic structure that satisfies the left invertive law: (ab)c =(cb)a. We prove that the class of left transitive AG-groupoids (AG-groupoids satisfying the identity, ab.ac = bc) coincides with the class of…

Group Theory · Mathematics 2016-06-21 Muhammad Rashad , Imtiaz Ahmad , Muhammad Shah , Z. U. A. Khuhro

A groupoid G is called an AG-groupoid if it satisfies the left invertive law: (ab)c = (cb)a. An AG-group G, is an AG-groupoid with left identity e \in G (that is, ea = a for all a \in G) and for all a \in G there exists a' \in G such that…

Group Theory · Mathematics 2016-06-21 Amanullah , Muhammad Rashad , Imtiaz Ahmad , Muhammad Shah

In this paper, we have investigated different classes of an AG-groupoid by their structural properties. We have prove that weakly regular, intra-regular, right regular, left regular, left quasi regular and completely regular coincide in an…

Group Theory · Mathematics 2010-11-01 Madad Khan , Faisal , Venus Amjid

An AG-monoid is an AG-groupoid (a groupoid satisfying the identity called left invertive law $(xy)z=(zy)x$) and having a left identiy. In this paper we enumerate AG-monoids algebraically and then implement them in GAP to compute them…

Group Theory · Mathematics 2026-01-08 Muhammad Shah , S. Shpectorov

A new subclass of AG-groupoids, so called, cyclic associative Abel-Grassman groupoids or CA-AG-groupoid is studied. These have been enumerated up to order $6$. A test for the verification of cyclic associativity for an arbitrary AG-groupoid…

Group Theory · Mathematics 2015-10-07 Muhammad Iqbal , Imtiaz Ahmad , Muhammad Shah , Muhammad Irfan Ali

A completely inverse $AG^{**}$-groupoid is a groupoid satisfying the identities $(xy)z=(zy)x$, $x(yz)=y(xz)$ and $xx^{-1}=x^{-1}x$, where $x^{-1}$ is a unique inverse of $x$, that is, $x=(xx^{-1})x$ and $x^{-1}=(x^{-1}x)x^{-1}$. First we…

Rings and Algebras · Mathematics 2015-01-27 Wieslaw A. Dudek , Roman S. Gigoń

Suppose that $(T,\star)$ is a groupoid with a left identity such that each element $a\in T$ has a left inverse. Then $T$ is called a \textit{gyrogroup} if and only if $(i)$ there exists a function $gyr:T\times T\longrightarrow Aut(T)$ such…

Group Theory · Mathematics 2021-06-08 S. Mahdavi , A. R. Ashrafi , M. A. Salahshour

The main purpose of this paper is to give a new definition for the notion of group-groupoid. Also, several basic properties of group-groupoids are established.

Group Theory · Mathematics 2015-12-31 Mihai Ivan

Given an ample, Hausdorff groupoid $\mathcal{G}$, and a unital commutative ring $R$, we consider the Steinberg algebra $A_R(\mathcal {G})$. First we prove a uniqueness theorem for this algebra and then, when $\mathcal{G}$ is graded by a…

Rings and Algebras · Mathematics 2016-09-12 Lisa Orloff Clark , Ruy Exel , Enrique Pardo

A Lie groupoid, called \textit{material Lie groupoid}, is associated in a natural way to any elastic material. The corresponding Lie algebroid, called \textit{material algebroid}, is used to characterize the uniformity and the homogeneity…

Differential Geometry · Mathematics 2018-11-06 V. M. Jiménez , M. de León , M. Epstein

In this article we have constructed some examples of some classes of AG-groupoids

Group Theory · Mathematics 2011-01-06 Qaiser Mushtaq , Madad Khan , Sameera Bano

A Hom-group G is a nonassociative version of a group where associativity, invertibility, and unitality are twisted by a map \alpha: G\longrightarrow G. Introducing the Hom-group algebra KG, we observe that Hom-groups are providing examples…

Group Theory · Mathematics 2018-03-28 Mohammad Hassanzadeh

We have characterized an intra-regular {\Gamma}-AG^{**}-groupoids by using the properties of {\Gamma}-ideals (left, right, two-sided ), {\Gamma}-interior, {\Gamma}-quasi, {\Gamma}-bi and {\Gamma}-generalized bi and {\Gamma}-(1,2)). We have…

Group Theory · Mathematics 2010-11-08 Madad Khan , Venus Amjid , Faisal

In this paper, we have introduced the concept of intuitionistic fuzzy ideals in an AG-groupoids. We have characterized regular and intra-regular AG-groupoids in terms of intuitionistic fuzzy left (right, two-sided) ideals, fuzzy…

Group Theory · Mathematics 2010-10-15 Madad Khan , Faisal

In this paper we have discusses {\Gamma}-left, {\Gamma}-right, {\Gamma}-bi-, {\Gamma}-quasi-, {\Gamma}-interior and {\Gamma}-ideals in {\Gamma}-AG^{**}-groupoids and regular {\Gamma}-AG^{**}-groupoids. Moreover we have proved that the set…

Group Theory · Mathematics 2010-12-10 Madad Khan , Naveed Ahmad , Inayatur Rehman

Using an algebraic point of view we present an introduction to the groupoid theory, that is, we give fundamental properties of groupoids as, uniqueness of inverses and properties of the identities, and study subgroupoids, wide subgroupoids…

Group Theory · Mathematics 2020-01-29 Jesús Ávila , Víctor Marín , Héctor Pinedo

We show how one can associate to a given class of finite type G-structures a classifying Lie algebroid. The corresponding Lie groupoid gives models for the different geometries that one can find in the class, and encodes also the different…

Differential Geometry · Mathematics 2008-07-25 Rui Loja Fernandes , Ivan Struchiner

The aim of this paper is to explain, mostly through examples, what groupoids are and how they describe symmetry. We will begin with elementary examples, with discrete symmetry, and end with examples in the differentiable setting which…

Representation Theory · Mathematics 2008-02-03 Alan Weinstein
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