39 citations · 182 across the 24 of their papers we have counts for
4 papers · 1 filter
Generalized quasiorders: constructions and characterizations
D. Jakubíková-Studenovská, R. Pöschel, S. Radeleczki
Quasiorders have the property that an operation preserves if and only if each (unary) translation obtained from is an endomorp…
On the lattice of fuzzy rough sets
Dávid Gégény, Sándor Radeleczki
By the means of lower and upper fuzzy approximations we define quasiorders. Their properties are used to prove our main results. First, we characterize those pairs of fuzzy sets wh…
Notes on the lattice of fuzzy rough sets with crisp reference sets
Dávid Gégény, László Kovács, Sándor Radeleczki
Since the theory of rough sets was introduced by Zdzislaw Pawlak, several approaches have been proposed to combine rough set theory with fuzzy set theory. In this paper, we examine…
The lattice of congruence lattices of algebras on a finite set
Danica Jakubíková-Studenovská, Reinhard Pöschel, Sándor Radeleczki
The congruence lattices of all algebras defined on a fixed finite set ordered by inclusion form a finite atomistic lattice . We describe the atoms and coatoms. Each…