Factor square full modules
Factor square full modules
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因数平方全模块
DOI:
10.1080/00927872.2020.1870997
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发表时间:
2021
影响因子:
0.7
通讯作者:
Yoshiharu Shibata
中科院分区:
文献类型:
--
作者:
Isao Kikumasa;Yosuke Kuratomi;Yoshiharu Shibata
In this paper, we first introduce the concept of “factor-square-full” modules defined as follows: For any proper submoduleXofM, there exist a proper submoduleYofMwithand an epimorphismand give some properties of these modules. Using those results, we show that any quasi-discrete module is a direct sum of a factor-square-full module and a dual-square-free module which are dual orthogonal, and consider the problem “When is a quasi-discrete module quasi-projective?”. Moreover, we study rings whose factor-square-full modules are closed under essential extensions or essential submodules.