-idéaux des ensembles ordonnés
O riešení niektorých nerozhodnutelných topologických problémov
OCA and towers in
We shall show that Open Coloring Axiom has different influence on the algebra than on . The tool used to accomplish this is forcing with a Suslin tree.
On a property of partially ordered sets.
On a Theory of Scale Types.
On chains and posets within the power set of a continuum.
On chains whose power semigroups are lattices.
On extensions of cyclic orders
On some hypotheses concerning trees.
On Some Intercalations In Ordered Sets
On the characterization of semilattices satisfying the descending chain condition and some remarks on distinguishing subsets
On the Order Type L-valued Relations on L-powersets.
Order Preserving or Increasing Mappings Freedom or Incomparability Preserving Mappings
Ordres à distance minimum d'un tournoi et graphes partiels sans circuits maximaux