congruence relations on congruence lattice

Fuzzy congruence relations

linear relations and nonlinear relations

(Weakly) covering congruence

∨-congruence

0-bisimple congruence

algebraic congruence

axiom of congruence

axioms of congruence

bi-semiring congruence

canonical congruence

characterized invariant congruence

class of a congruence

Clifford congruence

coefficient of congruence

complete congruence

complete left congruence

complete semilattice congruence

complete semilattice congruence on po-semigroups