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中文摘要：
设尺为一个环，e^2=e∈R，若对于左R-模Re的每个子模N，有ReN=N，则称P的子环eRe为弱角环，e是弱角幂等元．证明了如下结果：①若R为左MC2环，则弱角环eRe也是左MC2环；②若R为左min—abel环，则弱角环eRe也是左min—abel环；⑧若R为左mininjective环，则弱角环eRe也是左mininjective环；④若尺为左universally mininjective环，则弱角环eRe也是左universally mininjective环．
英文摘要：
Let R be a ring with e^2=e∈R, if for any left R-submodule N of Re, ReN=N, then eRe is called the weakly corner ring of R. This paper the following results are shown： ① If R is a left MC2 ring, then so is the weakly corner ring eRe; ② If R is a left min-able ring, then so is the weakly corner ring eRe; ③ If R is a left mininjective ring, then so is the weakly corner ring ere; ④ If R is a left universally mininjective ring, then so is the weakly corner ring ere.
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