English

Cosupport of artinian modules

Commutative Algebra 2021-11-15 v1

Abstract

Let (R,m)(R,\mathfrak{m}) be a commutative local noetherian ring. For an artinian RR-module MM, we show the equality cosuppRM=CosuppRM\mathrm{cosupp}_RM=\mathrm{Cosupp}_RM using the semi-discrete linearly compactness of RR-module HomR(Rp,M)\mathrm{Hom}_R(R_\mathfrak{p},M) where p\mathfrak{p} is a prime ideal of RR.

Keywords

Cite

@article{arxiv.2111.06536,
  title  = {Cosupport of artinian modules},
  author = {Xiaoyan Yang},
  journal= {arXiv preprint arXiv:2111.06536},
  year   = {2021}
}

Comments

7 pages,comments welcome

R2 v1 2026-06-24T07:35:51.546Z