摘要
本文利用小投射模刻划了左V—环并研究了补小投射模的性质,给出其自同态的构造,推广了的主要定理l.15.
We characterize the left V-ing via the technique of small projectine modnle. We also give some properties of small projective modules and give the structure of their automor-phism ring, this result generalizes the main result in [1].