摘要
研究了模的覆盖、覆盖数与模的自同态之间的一些联系.对半单环上有限生成左模给出一个无有限覆盖的判定定理.
Some connections between the covering, the covering number, and the Endomorphisms of modules are discussed. A criterion theorem of having no finite coverings for a finitely generated module M over a semisimple ring R is given.
出处
《青岛大学学报（自然科学版）》
CAS
2005年第2期37-39,共3页
Journal of Qingdao University(Natural Science Edition)
关键词
模的自同态
模的覆盖
模的覆盖数
Endomorphisms of modules
coverings of modules
covering numbers of modules
