English

Asymptotic behaviour of graded local cohomology modules via linkage

Commutative Algebra 2021-08-31 v1

Abstract

Assume that R=nN0RnR=\oplus_{n\in \mathbb{N}_0}R_n is a standard graded algebra over the local ring (R0,m0)(R_0,\mathfrak{m}_0), a\mathfrak{a} is a homogeneous ideal of RR, MM is a finitely generated graded RR-module and R+:=nNRnR_+:=\oplus_{n\in \mathbb{N}}R_n denotes the irrelevant ideal of RR. In this paper, we study the asymptotic behaviour of the set {grade(aR0,HR+grade(R+,M)(M)n)}nZ\{ \operatorname{grade}(\mathfrak{a} \cap R_0, H^{\operatorname{grade}(R_+,M)}_{R_+}(M)_n) \}_{n \in \mathbb{Z}} as nn \rightarrow -\infty, in the case where a\mathfrak{a} and R+R_+ are homogenously linked over MM.

Keywords

Cite

@article{arxiv.2108.12703,
  title  = {Asymptotic behaviour of graded local cohomology modules via linkage},
  author = {Maryam Jahangiri and Azadeh Nadali and Khadijeh Sayyari},
  journal= {arXiv preprint arXiv:2108.12703},
  year   = {2021}
}

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7 pages