Endomorphism rings of self-generators
Endomorphism rings of self-generators
The group of i?-homomorphisms Horn* (ikf, A), where Λf, A are modules over a ring R, is, in a natural way, a module over the endomorphism ring S of M.Under certain weak assumptions on M, the following is true: Hom Λ (M, -) carries injective envelopes of ϋN modules into …