摘要
本文定义了相对投射复盖,用它刻划了完全环和半完全环,并讨论了半完全环中生成子的等价条件.
In this paper, the relative projective cover is defined, perfect and semiperfect rings are described by the relative projective cover, and eguivalent conditions of the generator of semiperfect ring are discussed.
出处
《济南大学学报（社会科学版）》
1997年第2期50-52,共3页
Journal of University of Jinan:Social Science Edition
