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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Journal of Algebraarrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Journal of Algebra
Article . 2019 . Peer-reviewed
License: Elsevier Non-Commercial
Data sources: Crossref
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
zbMATH Open
Article . 2019
Data sources: zbMATH Open
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Surjective capacity and splitting capacity

Authors: Baidya, Robin;

Surjective capacity and splitting capacity

Abstract

Let \(R\) be a commutative ring. We denote by \(\mathrm{Spec}(R)\) the set of all prime ideals of \(R\) and \(j\)-\(\mathrm{Spec}(R)\) the set of all prime ideals in \(\mathrm{Spec}(R)\) that can be written as the intersection of maximal ideals. \(\mathrm{Spec}(R)\) is called the \emph{spectrum} and \(j\)-\(\mathrm{Spec}(R)\) the \emph{\(j\)-spectrum} of \(R.\) Let \(N\) be an \(R\)-module. The \emph{support} of \(N,\) denoted by \(\mathrm{Supp}_R(N),\) is the set of all \(\mathfrak{p} \in\) \(\mathrm{Spec}(R)\) such that \(N_\mathfrak{p}\neq 0.\) In the present paper, the author prove the following results: \begin{itemize} \item[1.] Let \(R\) be a commutative Noetherian ring and \(S\) a possibly noncommutative module-finite \(R\)-algebra. Let \(M\) and \(N\) be finitely generated right \(S\)-modules. Suppose that \(X=j-\mathrm{Spec}(R)\cap \hbox{Supp}_R(N),\) has finite dimension. \begin{itemize} \item[(i)] If \(M_\mathfrak{p}\) maps onto \(N_\mathfrak{p}^{\oplus[t+\dim_X(\mathfrak{p})]}\) for every \(\mathfrak{p}\in X,\) then \(M\) maps onto \(N^{\oplus t}\) \item[(ii)] If \(M_\mathfrak{p}\) admits \(N_\mathfrak{p}^{\oplus[t+\dim_X(\mathfrak{p})]}\) as a direct summand for every \(\mathfrak{p}\in X,\) then \(M\) admits \(N^{\oplus t}\) as a direct summand. \end{itemize} \item[2.] Let \(R\) be a commutative ring and \(S\) a possibly noncommutative module-finite \(R\)-algebra. Let \(M\) be a direct summand of a direct sum of finitely presented right \(S\)-modules, and let \(N\) be a right \(S\)-module. Suppose that \(Y=\mathrm{Max}(R)\cap\hbox{Supp}_R(N),\) is Noetherian of finite dimension \(d.\) \begin{itemize} \item[(i)] Suppose that \(N\) is finitely generated over \(S\). If \(M_\mathfrak{m}\) maps onto \(N_\mathfrak{m}^{\oplus(t+d)}\) for every \(\mathfrak{m}\in Y\), then \(M\) maps onto \(N^{\oplus t}\) \item[(ii)] Suppose that \(N\) is finitely presented over \(S\). If \(M_\mathfrak{m}\) admits \(N_\mathfrak{m}^{\oplus(t+d)}\) as a direct summand for every \(\mathfrak{m}\in Y\), then \(M\) admits \(N^{\oplus t}\) as a direct summand. \end{itemize} \end{itemize}

Related Organizations
Keywords

basic element, basic set, Structure, classification theorems for modules and ideals in commutative rings, summand, split, Rings of fractions and localization for commutative rings, surjective, Commutative Noetherian rings and modules, test point

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Average
Average
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