摘要
给出了SG-Cotorsion模的定义,并利用同调的方法讨论了SG-Cotorsion模的性质,目的是找到SG-Cotorsion模与预包络的关系,并最终找到了一个R-模M存在特殊的SG-Cotorsion预包络的条件。
The definition of the SG-Cotorsion module is given and the properties of SG-Cotorsion modules are discussed by homological method.The purpos it is finding the relationship of SG-Cotorsion and preenvlope.At last,the condition in which a R-modules M has a special SG-Cotorsion preenvelope is obtained.
出处
《科学技术与工程》
2010年第1期167-168,175,共3页
Science Technology and Engineering
