文件名称：Cohn环与Grothendieck群 (1992年)
文件大小：222KB
文件格式：PDF
更新时间：2024-06-14 05:12:09
自然科学 论文
We introduce three classes of cohn rings C1,C2 and C3). Let R and S are rings,O R-+ S is a ring homomorphism. We prove that R E Ci if and only if R/J(R) E Ci. In We also discuss the relation between the PWSF(PSF,PWF and PF,respectively) rings and their gr