摘要
讨论了文献［１］中给出的关于投射模的刻划的一个命题，举出反例说明这个命题不成立。
In this paper,a proposition in [1],for characterization of projective modules is discussed.A counterexample is given to show that the proposition is incorrect and partial conditions are revised to get some new characterization of projective modules.
出处
《辽宁师范大学学报（自然科学版）》
CAS
1999年第3期200-202,共3页
Journal of Liaoning Normal University:Natural Science Edition
关键词
分裂
正合序列
投射模
split
exact sequence
projective module
