The minors of Noetherian semi-perfect rings of distributive module type (Q2703346)

Associative rings with \(1\neq 0\) are considered. The ring \(A\) is called semi-perfect if the factor-ring \(A/R\) is Artinian and idempotents can be lifted modulo the Jacobson radical \(R\). A semi-perfect ring \(A\) is called ring of distributive module type if an arbitrary finitely presented right \(A\)-module is semi-distributive. The author describes the minors of order 3 and 4 of Noetherian semi-perfect rings of distributive module type and proves that all such rings are Noetherian biserial rings.