Some remarques on hypergroups.
Some theorems on hemigroups.
Structure des hypergroupes quotients et des hypergroupes de type U
Sul la theorie de la dimension dans les hypergroupes
Sur les homomorphismes d'hypergroupes
S-системы произвольного индекса. I
S-системы произвольного индекса. II
The group ring of Richard Thompson’s Group has no minimal non-zero ideals
We use a total order on Thompson’s group to show that the group ring has no minimal non-zero ideals.
The lattice of solid -subgroups of a retractable group
The Levitzki Radical for Omega-groups
The Levitzki radical for -groups.
The local integration of Leibniz algebras
This article gives a local answer to the coquecigrue problem for Leibniz algebras, that is, the problem of finding a generalization of the (Lie) group structure such that Leibniz algebras are the corresponding tangent algebra structure. Using links between Leibniz algebra cohomology and Lie rack cohomology, we generalize the integration of a Lie algebra into a Lie group by proving that every Leibniz algebra is isomorphic to the tangent Leibniz algebra of a local Lie rack. This article ends with...
The number of minimal varieties of idempotent groupoids
The set of hypergroups with operators which are constructed from a set with two elements
Über die Stirlingschen Zahlen der zweiten Art.
Varieties of groupoids determined by short linear identities
Vector valued semigroups.
Zum Problem des Isomorphismus der direkten Produkte von Gruppoiden
, -transitive groupoids
-extensions of discrete multivalued groups.