余纯Gorenstein投射、内射和平坦模

Copure Gorenstein Projective,Injective and Flat Module

利用Gorenstein投射、内射和平坦模定义了余纯Gorenstein投射、内射和平坦模,并利用同调的方法讨论了余纯Gorenstein投射、内射和平坦模的性质,最终找到了余纯Gorenstein投射、内射和平坦模与相应的预包络和预覆盖的关系。

The definitions of the copure Gorenstein projective,injective and flat Module are given using Gorenstein projective,injective and flat module and the properties of copure Gorenstein projective,injective and flat module are discussed by homological method.At last the relationship of copure Gorenstein projective,injective and flat module and preenvelope are found.