13F99 6 Bezout ring 4 elementary divisor ring 4 neat ring 4 clean ring 2 clear ring 2 neat range one 2 stable range one 2 06F20 1 Bezout duo-domain 1 Distributive domain 1 Hermite ring 1 diagonal reduction of matrices 1 duo ring 1 effective ring 1 elementary reduction of matrices 1 exchange ring 1 idempotent of stable range 1 1 regular ring 1 ring with elementary reduction of matrices 1 rings of almost stable range 1 1 semiexchange ring 1 semihereditary ring 1 stable range 1 stable range 1 1