Danica Jakubı́ková-Studenovská

Generalized quasiorders: constructions and characterizations

Abstract Quasiorders $$ \varrho \subseteq A^{2}$$ ϱ ⊆ A 2 have the property that an operation $$f:A^{n}\rightarrow A$$ f : A n → A preserves $$\varrho $$ ϱ if and only if each (unary) translation obtained from f is an endomorphism of $$\varrho $$ ϱ . Generalized quasiorders $$\va...