本文研究了投射根和亚投射模的性质.利用Noether环、Noether模的性质给出了亚投射模、投射根是投射的条件,环的投射根为零、幂等的条件.最后,给出了一些例子.本文的大部分结果是陈焕艮等人的一系列主要结果的推广.
In this paper,we study properties of projective radicals and meta-projective modules.By using some properties of Noetherian rings and Noetherian modules,some conditions for meta-projective modules,projective radicals to be projective are given,and some conditions for the projective radical of a ring to be zero,nilpotent are given.Finally,we give some examples.Most results in this paper are the generalizations of the main results by Chen Huangen,et al..