13C05 13C13 6 16D70 4 Dedekind domains 4 Non-separated modules 3 Prufer modules 3 Pullback 3 multiplication module 3 11Y50 2 13A15 2 13C99 2 13H15 2 16D60 2 Pureinjective modules 2 Separated modules and representations 2 Weak comultiplication modules 2 \(S\)-cotorsion-free module 2 \(S\)-second submodule 2 faithful module 2 fitting ideals 2 projective of constant rank 2 second submodule 2 simple module 2 13A99 1 13C99; Secondary 13E15 1 13E99 1 Primarily multiplication modules 1 Primary 13A15 1 Pure-injective modules 1 Separated modules 1