On regularity classes of binary relations
On ring theoretic lattice modules
On semimodular lattices of generating systems
On semisimple classes of Abelian linearly ordered groups
On separation properties in semilattices.
On skeletal and irreducible elements in tolerance lattices of finite distributive lattices
On skew lattices. I.
On skew lattices. II.
On some algebras connected with the theory of harmony
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 Jordan-Hölder-Dedekind type theorems in lattices.
On some notions related to compactness for locales
On Stanley-Reisner rings
On strong superlattices
On structural properties of normality relations on lattices
On subalgebra lattices of a finite unary algebra. II.
We use graph-algebraic results proved in [8] and some results of the graph theory to characterize all pairs of lattices for which there is a finite partial unary algebra such that its weak and strong subalgebra lattices are isomorphic to and , respectively. Next, we describe other pairs of subalgebra lattices (weak and relative, etc.) of a finite unary algebra. Finally, necessary and sufficient conditions are found for quadruples of lattices for which there is a finite unary algebra having...
On the algebraic structure of the process of forming subsequences
On the -equivalence of multilattices
On the canonical subdirect decomposition of a join semilattice
On the characterization of semilattices satisfying the descending chain condition and some remarks on distinguishing subsets