摘要
如S≥R 是几乎优越扩张。我们证明了如果一环是Kasch 环(PF- 环) , 则另一环也是。进一步得到矩阵环 Mn ( R) ,the corssed product R* G ( G 有限, o ( G) - 1 ∈R) 是Kasch 环(PF- 环) ,
In this paper, S is an almost excellent extensions of R .We proved that if one ring is right Kasch (PF-) rings,so is the other.Futhermore, M n(R) ,the crossed product R *G(G finite and o (G) -1 ∈R) is right Kasch( PF- ) rings.This result is a generalization of Faith 〔1〕 and Wilkerson 〔2〕 .
出处
《江苏石油化工学院学报》
1999年第2期50-51,共2页
Journal of Jiangsu Institute of Petrochemical Technology