On a category of extensions whose endomorphism rings have at most four maximal ideals

Abstract

We describe the endomorphism ring of a short exact sequences $0\to A_R\to B_R\to C_R\to 0$ with $A_R$ and $C_R$ uniserial modules and the behavior of these short exact sequences as far as their direct sums are concerned.

Cited by in corpus (2)

• Homomorphisms with semilocal endomorphism rings between modules
• On a category of chains of modules whose endomorphism rings have at most $2n$ maximal ideals