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On universal quasigroup identities

Elena Brožíková (1992)

Mathematica Bohemica

The paper deals with quasigroup identities under isotopies. The terminology is taken from [2], [3] and [4]. Stimulated by geometric illustrations, V. D. Belousov in [2] has presented two important identity properties and posed a question for which identities these properties are necessary and sufficient for the identity to be invariant under isotopies. Inspired by V. D. Belousov, G. Monoszová investigated in [6] one special kind of identities for which both Belousov’s properties give necessary and...

On V n -semigroups

Ze Gu, Xilin Tang (2015)

Open Mathematics

In this paper, we give some new characterizations of orthodox semigroups in terms of the set of inverses of idempotents. As a generalization, a new class of regular semigroups, namely Vn-semigroups, is introduced. Also, we give a characterization of Vn-semigroups and investigate some properties of Vn-semigroups. Furthermore, we show that the class of Vn-semigroups is closed under direct products and homomorphic images. However, regular subsemigroups of Vn-semigroups (n ≥ 2) are not necessarily Vn-semigroups...

Displaying 81 – 85 of 85

On universal quasigroup identities

On V n -semigroups

On varieties of combinatorial inverse semigroups II.

Operators $H$ , $S$ and $P$ in the classes of $p$ -semigroups and $p$ -semirings.

Ordering D-classes and computing Schein rank is hard.

Currently displaying 81 – 85 of 85

Displaying 81 – 85 of 85

On universal quasigroup identities

On V n -semigroups

On varieties of combinatorial inverse semigroups II.

Operators H , S and P in the classes of p -semigroups and p -semirings.

Ordering D-classes and computing Schein rank is hard.

Currently displaying 81 – 85 of 85

Operators $H$ , $S$ and $P$ in the classes of $p$ -semigroups and $p$ -semirings.