Groupoids and the associative law. VII. Semigroup distance of SH-groupoids
Groupoids and the associative law VIIA. (SH-groupoids of type (A, B, A) and their semigroup distances)
Groupoids and the associative law XII. (Representable cardinal functions)
Groupoids assigned to relational systems
By a relational system we mean a couple where is a set and is a binary relation on , i.e. . To every directed relational system we assign a groupoid on the same base set where if and only if . We characterize basic properties of by means of identities satisfied by and show how homomorphisms between those groupoids are related to certain homomorphisms of relational systems.
Groupoids with non-associative triples on the diagonal
Groups, transversals, and loops
A family of loops is studied, which arises with its binary operation in a natural way from some transversals possessing a ``normality condition''.
Grupoids and the associative law VII B (SH-grupoids and simply generated congruences)
Grupoidy a grupy s operátory
GS-quasigroups
Halfnets and partial -loops
Hamiltonian quasimodules and trimedial quasigroups
Hexagonal quasigroups
Historical notes on loop theory
This paper deals with the origins and early history of loop theory, summarizing the period from the 1920s through the 1960s.
Homomorphic images of subdirectly irreducible groupoids
A groupoid is a homomorphic image of a subdirectly irreducible groupoid (over its monolith) if and only if has a smallest ideal.
Homomorphisms of nets of fixed degree, with singular points on the same line
Hyper BCI-algebras
We introduce the concept of a hyper BCI-algebra which is a generalization of a BCI-algebra, and investigate some related properties. Moreover we introduce a hyper BCI-ideal, weak hyper BCI-ideal, strong hyper BCI-ideal and reflexive hyper BCI-ideal in hyper BCI-algebras, and give some relations among these hyper BCI-ideals. Finally we discuss the relations between hyper BCI-algebras and hyper groups, and between hyper BCI-algebras and hyper -groups.
Hypergroupes Canoniques Values et Hypervalues-Hypergroupes Fortement et Superieurement Canoniques
Hypergroupes et groupes ordonnés
Hypergroupes opérant transitivement sur un ensemble
Hypergroups defined from a linear space