Gauss整数环诸类问题探

本主要探讨：（1）Gauss整数环的定义及性质;（2）其商环及性质;(3)Z(x)/x^2 1同构于Z(i);(4)两点猜想．     

关于超素环的左经典商环

In this paper,we define the left rank of a ring R and discuss the relatlons between a left ore reng R and its left classical quotient ring Q on the properties of their ideals and left ranks.Also we gave four equivalent types of the proposition:a ring R has a left classical quotient ring Q and Q is a division ring.As an application of this result,we gave a brief proof method which different from [2] on the theorem of the Goldie Prime rings.     

三角环上的σ-双导子

本文利用极大右商环证明了一类三角环上的σ-双导子可以表示成极值σ-双导子和内σ-双导子之和.     

一类IBN环的商环的Grothendieck群的性质

本文就特殊的一类IBN环的商环讨论其Grothendieck群的一些性质。     

再论实闭环

继作者[4]与[7]中的工作对实闭环作进一步的探讨。主要的结果为定理1与3。另外，利用所获得的结果对文[3]中最后所提出的问题作了正面的解答，见定理5。     

ON fPP—Rings

in this psper,we investigate nore general rings than GPP-rings,called fPP-rings.First,we in-vestigate fPP-rings and their classical quotient quotient rings.We ptove (1) fPP-rings are f-quasi-regular rings.(2)R is a fPP-ring then Q(R) is fPP-ring.(3)R= iRi is a fPP-ring if and only if every Ri is a fPP-ring.Second,we present a characterization of fPP-ring via fP-injectivity,we prove that R is a fPP-ring if and only if every quotient module of a imjective R-module is fP-injectiv if and only ifevery quotient module of a P-injective R-module is fP-injective.Third,we study how fPP-rings are related to von Neu-mann regular rings,we prove that R is von Nevmann regular if and only if R is fPP-ring and for every α∈R,there is b∈E(R) and d∈R suth that α=f(α)b and f(α)=f^2(α) d for some f∈F(R).Finally,we give a example of fPP-ring which is not GPP-ring.     

正则环和GP-内射环

A ring R is called left Gp-injective if for any a∈R, there exists a positive integer n such that any left R-homomorphism of Raⁿ into R extends to one of R into R. In this paper, we prove that the centre of semiprime (left nonsingular) left GP- injective ring is regular ring, and improve some propositions in [3].     

关于环Z[(√c)]的商环的注记

讨论了一类环的商环元素的个数,并推广了文[1,2]的结果.