16D40 6 16D10 3 16D90 3 Dedekind finite modules 2 Hopfian modules 2 15A21 1 16D10; 16D40; 16D80 1 16D50 1 16D60; Secondary 16L30 1 16D70 1 16E05 1 16G10 1 16G20 1 16L60 1 16P20 1 16P40 1 16P60 1 16T15 1 Goldie-Rad-Supplement submodule 1 Hermite rings 1 Morita context 1 Primary 16D40 1 Rickart module 1 Supplement submodule 1 \(\delta\)-Hopfian modules 1 \(\mathrm{Rad}(\cdot)\)-inverse split module 1 \(\mathrm{Soc}(\cdot)\)-inverse split module 1 abelian and quasi-duo rings 1 amply Goldie-Rad-Supplemented module 1 clean coalgebra 1