Ding Projective and Ding Injective Modules

Ding Projective and Ding Injective Modules
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DOI:
10.1142/s1005386713000576
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发表时间:
2013-10
期刊:
影响因子:
0.3
通讯作者:
Gang Yang;Zhongkui Liu;L. Liang
Gang Yang;Zhongkui Liu;L. Liang
中科院分区:
数学4区
文献类型:
--
作者:
Gang Yang;Zhongkui Liu;L. Liang

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如果存在投射R-模的正合列⋯→P1→P0→P0→P1→⋯且M=Ker(P0→P1)使得Hom(-,F)当F是平坦R-模时,Hom(-,F)离开该序列,则称R-模M为Ding投射模。在本文中,我们研究了这类模的一些基本性质。并讨论了Ding内射模的性质。
An R-module M is called Ding projective if there exists an exact sequence ⋯ → P1→ P0→ P0→ P1→ ⋯ of projective R-modules with M=Ker(P0→ P1) such that Hom(-,F) leaves the sequence exact whenever F is a flat R-module. In this paper, we develop some basic properties of such modules. Also, properties of Ding injective modules are discussed.