5 citations · 11 across the 15 of their papers we have counts for
7 papers · 1 filter
On three generalizations of the group concept: groupoid, generalized group and almost groupoid
Gheorghe Ivan
The aim of this paper is to describe the definitions and main properties of three generalizations of the group concept, namely: groupoid, generalized group and almost groupoid. Som…
The synthetic presentation of the main research directions in groupoid theory
Gheorghe Ivan
The purpose of this paper is to present a systematic exposition of the main results obtained in the studies carried out in groupoid theory. Key words and phrases: groupoid, topolog…
On transitive group G-groupoids
Gheorghe Ivan
The purpose of this paper is to study the transitive group-groupoids.
A Groupoid Structure on a Vector Space
Vasile Poputa, Gheorghe Ivan
In this paper we introduce the concept of generalized vector groupoid. Several properties of them are established.
Vector Groupoids
Vasile Poputa, Gheorghe Ivan
The main purpose of this paper is to study the vector groupoids. This is an algebraic structure which combines the concepts of Brandt groupoid and vector space such that these are…
A Package of Programs for Determination of Some Classes of Subgroupoids
Gheorghe Ivan, Mihai Ivan
We give three programs on computer for finding the subgroupoids, wide subgroupoids and normal subgroupoids of a finite groupoid.