Über darstellungen von Verbänden mit -Idealen gerichteter Gruppen
Über das Zutreffen einer Eigenschaft einer Menge auf die Elemente der Potenzmenge
Über Erweiterungen geordneter Mengen
Über Mengen mit Trennrelationen
Über Realisierungen geordneter Mengen
Una nota sulla nozione di molto maggiore
Une remarque sur l'algorithme de Ducamp pour la recherche de tous les ordres totaux contenant un ordre partiel
Uniform ideal completions
Universal and internal properties of some completions of k-join-semilattices and k-join-distributive partially ordered sets.
Universal and internal properties of some extensions of partially orderd sets.
Universal cyclically ordered sets
Upper and Lower Bounds in Relator Spaces
2000 Mathematics Subject Classification: 06A06, 54E15An ordered pair X(R) = ( X, R ) consisting of a nonvoid set X and a nonvoid family R of binary relations on X is called a relator space. Relator spaces are straightforward generalizations not only of uniform spaces, but also of ordered sets. Therefore, in a relator space we can naturally define not only some topological notions, but also some order theoretic ones. It turns out that these two, apparently quite different, types of notions are closely...