Cancellative relations and matrices
Caratterizzazione di una classe di anelli generalizzati
Commutation of operations and its relationship with Menger and Mann superpositions
The article considers a problem from Trokhimenko paper [13] concerning the study of abstract properties of commutations of operations and their connection with the Menger and Mann superpositions. Namely, abstract characterizations of some classes of operation algebras, whose signature consists of arbitrary families of commutations of operations, Menger and Mann superpositions and their various connections are found. Some unsolved problems are given at the end of the article.
Congruences of -group and of associated Hosszú-Gluskin algebras.
Construction of all homomorphisms of groupoids
Covering -groups of -groups
C-S-maximal superassociative systems
C-S-maximal superassociative systems. II.