On some classes of point algebras
On some finite groupoids with distributive subgroupoid lattices
The aim of the paper is to show that if S(G) is distributive, and also G satisfies some additional condition, then the union of any two subgroupoids of G is also a subgroupoid (intuitively, G has to be in some sense a unary algebra).
On some properties of Brandt groupoids.
On some representations of hypergroups
On splitting -systems
On Steiner loops and power associativity.
On Steiner manifolds
On Steiner quasigroups
On subdirectly irreducible Steiner loops of cardinality .
On subgroupoid lattices of some finite groupoid.
On symmetries and parallelogram spaces.
The notion of a TST-space is introduced and its connection with a parallelogram space is given. The existence of a TST-space is equivalent to the existence of a parallelogram space, which is a new characterization of a parallelogram space. The structure of a TST-space is described in terms of an abelian group.
On ternary semigroups of homomorphisms of ordered sets
The paper deals with the characterization of ordered sets by means of ternary semigroups of homomorphisms of ordered sets.
On the arity of idempotent reducts of groups
On the category of n-groups
On the dimensions of automorphism groups of four-dimensional double loops.
On the existence of a Haar measure in topological IP-loops
In this paper, we give conditions ensuring the existence of a Haar measure in topological IP-loops.
On the extension of transi-groups
On the general theory of m-groups
On the generalised equations of associativity and bisymmetry.
On the hypergroups with four proper pairs and without scalars