The characterization of -compact elements in some lattices
The graphs of join-semilattices and the shape of congruence lattices of particle lattices
We attach to each -semilattice a graph whose vertices are join-irreducible elements of and whose edges correspond to the reflexive dependency relation. We study properties of the graph both when is a join-semilattice and when it is a lattice. We call a -semilattice particle provided that the set of its join-irreducible elements satisfies DCC and join-generates . We prove that the congruence lattice of a particle lattice is anti-isomorphic to the lattice of all hereditary subsets of...
The ideal structure of simple ternary algebras
The Lattice of all Systems of -Ideals in a Set
The strong independence theorem for automorphism groups and congruence lattices of finite lattices.
Tolerance extensions in distributive lattices
Tolerances and congruences on lattices
Tolerances and convexity
Tolerances and orderings on semilattices
Tolerances, covering systems, and the axiom of choice
Tolerances, interval orders, and semiorders
Tolerances on -lattices
Tolerante Catalanzahlen
Topology on regulators of lattice ordered groups. I. Topology induced by an -group
Totally inhomogeneous lattice ordered groups
Triple construction of semilattices with admitting neutral -closure operators
Truth filters in De Morgan lattices.
Two closure operators which preserve m-compacticity