On pushing out frames
On -algebras.
On ()-fuzzy filters of pseudo-BL algebras.
On quantic conuclei in orthomodular lattices.
On quasi-antiorder in semigroups
On quasi-uniform space valued semi-continuous functions
F. van Gool [Comment. Math. Univ. Carolin. 33 (1992), 505–523] has introduced the concept of lower semicontinuity for functions with values in a quasi-uniform space . This note provides a purely topological view at the basic ideas of van Gool. The lower semicontinuity of van Gool appears to be just the continuity with respect to the topology generated by the quasi-uniformity , so that many of his preparatory results become consequences of standard topological facts. In particular, when the order...
On radical classes of Abelian linearly ordered groups
On Raney's theorems for completely distributive complete lattices
On reflexive closed set lattices
For a topological space , let denote the set of all closed subsets in , and let denote the set of all continuous maps . A family is called reflexive if there exists such that for every . Every reflexive family of closed sets in space forms a sub complete lattice of the lattice of all closed sets in . In this paper, we continue to study the reflexive families of closed sets in various types of topological spaces. More necessary and sufficient conditions for certain families of closed...
On regular and intra-regular poe semigroups.
On Regular Anti-congruence in Anti-ordered Semigroups
On regular elements in an incline.
On regular le-semigroups.
On regular le-semigroups.
On regularity classes of binary relations
On relations
On representation of cyclically ordered sets
On representations of tolerance ordered commutative semigroups
On Riečan and Bosbach states for bounded non-commutative -monoids
On Riesz groups.