Another Gorenstein analogue of flat modules
Another Gorenstein analogue of flat modules
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平面模块的另一个 Gorenstein 类似物
DOI:
10.1080/00927872.2016.1245314
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发表时间:
2017-02
期刊:
影响因子:
--
通讯作者:
Lixin Mao
中科院分区:
文献类型:
--
作者:
Lixin Mao
ABSTRACT A right R-module M is called glat if any homomorphism from any finitely presented right R-module to M factors through a finitely presented Gorenstein projective right R-module. The concept of glat modules may be viewed as another Gorenstein analogue of flat modules. We first prove that the class of glat right R-modules is closed under direct sums, direct limits, pure quotients and pure submodules for arbitrary ring R. Then we obtain that a right R-module M is glat if and only if M is a direct limit of finitely presented Gorenstein projective right R-modules. In addition, we explore the relationships between glat modules and Gorenstein flat (Gorenstein projective) modules. Finally we investigate the existence of preenvelopes and precovers by glat and finitely presented Gorenstein projective modules.
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DOI:
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