O jednom pěkném algebraickém výsledku
On a characterization of the lattice of subsystems of a transition system.
On a problem of Pastijn and Petrich.
On a question of K. Leeb
On congruence lattices in a category
On congruence lattices of regular semigroups with Q-inverse transversals.
On finite lattices which are embeddable in subsemigroup lattices.
On indecomposable representations of quivers with zero-relations
On infinite partition representations and their finite quotients
On isomorphisms of graphs of lattices
On Jónsson's theorem
A proof of Jonsson's theorem inspired by considering a natural topology on algebraic lattices is given.
On lattices determined up to isomorphisms by their graphs
On lattices embeddable into subsemigroup lattices. III: Nilpotent semigroups.
On lattices embeddable into subsemigroup lattices. V. Trees.
On pseudocomplemented semilattices with Stone congruence lattices
On radical classes of Abelian linearly ordered groups
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 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 collection of lattices determined by the same poset of meet-irreducibles.
On the congruence lattice of an abelian lattice ordered group
In the present note we characterize finite lattices which are isomorphic to the congruence lattice of an abelian lattice ordered group.