形式局部上同调模的共域化

IF 0.6 4区 数学 Q3 MATHEMATICS Hokkaido Mathematical Journal Pub Date : 2021-02-01 DOI:10.14492/hokmj/2018-906
S. Rezaei
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引用次数: 0

摘要

设$(R,\ frk {m})$是一个noether局部环,$\ frk {a}$是$R$的理想,$ m $是一个有限生成的$R$-模。本文研究了形式局部上同模的共域化问题。本文类似于局部上同调理论中的局部全局原理,研究了形式局部上同调模的共域性和极小性。除此之外,我们将证明,对于任意整数$n$, $\mathfrak{F}_{\frak{a}}^i(M)$对于所有$i \lt n$都是$R$-模,当且仅当$_{\frak{p}}(\mathfrak{F}_{\frak{a}}^i(M)) $对于所有$i \lt n$和所有$\frak{p} $-模在\operatorname{Spec}(R)$中是可表示的$R_{\frak{p}}$-模。同样,$\ mathfrak{F}_{\frak{a}}^i(M) $对于所有$i \lt n$是极小极大$R$-模组,当且仅当$ _{\frak{p}}(\mathfrak{F}_{\frak{a}}^i(M)) $是可表示的$R_{\frak{p}}$-模组对于所有$i \lt n$和所有$\frak{p} \in \operatorname{Spec}(R)\setminus\lbrace \frak{M}\rbrace$是可表示的。
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Colocalization of formal local cohomology modules
Let $(R,\frak{m})$ be a Noetherian local ring, $\frak{a}$ an ideal of $R$ and $M$ a finitely generated $R$-module. In this paper, we study Colocalization of formal local cohomology modules. Here, similar to the local global Principle in local cohomology theory, we investigate artinianness and minimaxness of formal local cohomology modules in terms of their colocalizations. Among other things, we will prove that, for any integer $n$, $\mathfrak{F}_{\frak{a}}^i(M)$ is artinian $R$-module for all $i \lt n$, if and only if $_{\frak{p}}(\mathfrak{F}_{\frak{a}}^i(M)) $ is representable $R_{\frak{p}}$-module for all $i \lt n$ and all $\frak{p} \in \operatorname{Spec}(R)$. Also, $ \mathfrak{F}_{\frak{a}}^i(M) $ is minimax $R$-module for all $i \lt n$, if and only if $ _{\frak{p}}(\mathfrak{F}_{\frak{a}}^i(M)) $ is representable $R_{\frak{p}}$-module for all $i \lt n$ and all $\frak{p} \in \operatorname{Spec}(R)\setminus\lbrace \frak{m}\rbrace$.
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来源期刊
CiteScore
1.00
自引率
0.00%
发文量
14
审稿时长
>12 weeks
期刊介绍: The main purpose of Hokkaido Mathematical Journal is to promote research activities in pure and applied mathematics by publishing original research papers. Selection for publication is on the basis of reports from specialist referees commissioned by the editors.
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