On a characterization of the lattice of -ideals of an ordered set
On a construction of amalgamation I
On a local property of the unoriented graph of a modular multilattice
On a power of cyclically ordered sets
On a property of partially ordered sets.
On A System Of All Maximal Chains (Antichains) Of A Graph
On an axiom concerning the theory of “interval orders”.
On automorphism groups of cyclically ordered sets.
On Banach's fixed point theorem and formal balls.
On blockers in bounded posets.
On chains and posets within the power set of a continuum.
On completion of cyclically ordered sets
On convexly isomorphic posets
On dense subsets of rational numbers
On determination of a cyclic order
On direct and subdirect product decompositions of partially ordered sets
On direct product decompositions of directed sets
On distances and metrics in discrete ordered sets
Discrete partially ordered sets can be turned into distance spaces in several ways. The distance functions may or may not satisfy the triangle inequality and restrictions of the distance to finite chains may or may not coincide with the natural, difference-of-height distance measured in a chain. It is shown that for semilattices the semimodularity ensures the good behaviour of the distances considered. The Jordan-Dedekind chain condition, which is weaker than semimodularity, is equivalent to the...
On extended cyclic orders
On extensions of cyclic orders