Weak coherence of congruences
Weak congruence identities at 0.
Weak congruences of an algebra with the CEP and the WCIP
Here we consider the weak congruence lattice of an algebra with the congruence extension property (the CEP for short) and the weak congruence intersection property (briefly the WCIP). In the first section we give necessary and sufficient conditions for the semimodularity of that lattice. In the second part we characterize algebras whose weak congruences form complemented lattices.
Weak products for universal algebra and model theory
Weak subalgebra lattices
Weak subalgebra lattices of monounary partial algebras
Weakly regular algebras in varieties with principal compact congruences