English

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

Rings and Algebras 2025-04-18 v1

Abstract

We describe the endomorphism ring of a short exact sequences 0ARBRCR00 \to A_R \to B_R \to C_R \to 0 with ARA_R and CRC_R uniserial modules and the behavior of these short exact sequences as far as their direct sums are concerned.

Keywords

Cite

@article{arxiv.2504.12873,
  title  = {On a category of extensions whose endomorphism rings have at most four maximal ideals},
  author = {Federico Campanini and Alberto Facchini},
  journal= {arXiv preprint arXiv:2504.12873},
  year   = {2025}
}