elementary divisor ring 5 neat ring 5 13F99 4 Bezout ring 4 clean ring 3 neat range one 3 stable range one 3 clear ring 2 06F20 1 13F15 1 19B10 1 Bezout duo-domain 1 Distributive domain 1 Hermite ring 1 effective ring 1 exchange ring 1 idempotent of stable range 1 1 pseudo-irreducible elemen 1 regular ring 1 semihereditary ring 1 stable range 1 1 stable range two 1