相对于子模块的可伸缩模块

A. R. M. Hamzekolaee, Y. Talebi
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引用次数: 2

摘要

设$R$是环,$M$是右$R$模。设$N$是$M$的真子模。我们说$M$是$N$-可缩的(或者$M$相对于$N$是可缩的),前提是,对于$M$的每一个包含$N$的固有子模块$K$,存在一个非零同态$f:M/K\右移M$。给出了一个模$M$可缩当且仅当$M$相对于子模$N$可缩的几个条件。我们还提供了一些例子来说明特殊情况。
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Coretractable modules relative to a submodule
Let $R$ be a ring and $M$ a right $R$-module. Let $N$ be a proper submodule of $M$. We say that $M$ is $N$-coretractable (or $M$ is coretractable relative to $N$) provided that, for every proper submodule $K$ of $M$ containing $N$, there is a nonzero homomorphism $f:M/K\rightarrow M$. We present some conditions that a module $M$ is coretractable if and only if $M$ is coretractable relative to a submodule $N$. We also provide some examples to illustrate special cases.
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来源期刊
CiteScore
0.90
自引率
0.00%
发文量
12
审稿时长
5 weeks
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