斜诣零Armendariz环

本文研究了α-诣零Armendariz 环的性质. 利用环R 上的斜多项式环, 得到了α-诣零Armendariz 环的例子并研究了它的扩张, 推广了文献[4] 中关于诣零Armendariz 环的相应的结论.     

关于强Armendariz环和强拟Armendariz环

提出了强拟Armendariz环的概念,给出了强Armendariz环和强拟Armendariz环上的一些结果.     

诣零换位子中心环的一些刻画

研究诣零换位子中心环(NC环)的一些性质,并给出了若干结果.     

广义弱Armendariz环及其扩张（英文）

对环R的一个自同态α,通过引入α-弱Armendariz环和α-弱拟Armendariz环研究了R相对于α的弱Armendariz性质.这两类环是对弱Armendariz环和弱拟Armendariz环的进一步推广,为研究环的弱Armendariz性质提供了新思路.本文对这两类环给出了一些刻画,构造了一些所需的例子和反例,统一和推广了一些已知的研究结果.     

关于循环环的诣零根与诣零理想的结构

研究了循环环R =(a)(a2 = κa,κ≠0)的诣零根和诣零理想的结构,得到了如下主要结论:1)若|R| = ∞,则K(R)= {0},从而诣零理想只有{0}.2)若|R| =n＞ 1,1≤κ ＜ n,则(1)R的诣零根K(R)=(μ(n,κ)a),其阶为点;(2)R的所有诣零理想为{＜λμ(n,κ)a＞,其中λ为...     

一类上三角矩阵环$W_{n}(p, q)$的斜Armendariz性质

设α是环R的一个自同态,称环R是α-斜Armendariz环,如果在R[x;α]中,(∑_(i=0)~ma_ix~i)(∑_(j=0)~nb_jx~j)=0,那么a_ia~i(b_j)=0,其中0≤i≤m,0≤j≤n.设R是α-rigid环,则R上的上三角矩阵环的子环W_n(p,q)是α~—-斜Armendariz环.     

Morita Context环的幂零性

设(A,B,V,W,(),[])是一个Morita Context,C=A VW B是对应的Morita Context环.用基本环论方法,给出了C与A,B,V,W之间关于环的诣零性,幂零性,局部幂零性,N—诣零性,P—性等性质的关系.     

论Weaker ΓN-环的诣零根

本文旨在系统阐述ＷｅａｋｅｒΓＮ－环的五个诣零根．它们分别是：强诣零根ＮＳ,拟强诣零根ＮＱＳ,诣零根Ｎ,拟诣零根ＮＱ以及Ｂ－诣零根ＮＢ（Ｂａｅｒ模式诣零根）．最后还证明了五个诣零根之间的关系：ＮＳ＝ＮＱＳ＝ＮＢＮ＝ＮＱ．     

交换局部环上的强拟诣零clean2×2矩阵

本文研究了交换局部环上的2阶矩阵的强拟诣零clean性,利用矩阵的特征方程的方法,给出了交换局部环上的2阶矩阵是强拟诣零clean的具体判别方法,所得结果丰富并推广了强拟诣零clean的研究.     

斜Armendariz矩阵环

Let R be a ring.We show in the paper that the subring Un(R) of the upper triangular matrix ring Tn(R) is α-skew Armendariz if and only if R is α-rigid,also it is maximal in some non α-skew Armendariz rings,where α is a ring endomorphism of R with α(1) = 1.     

關於素性環

<正> §1.本文的目的是在對於所謂素性環(Primal Ring)作一些探討.這裹的環都是指着有么元無零因子的可換環.我們以R表這樣一個環,1就是R的么元,大寫字母A,B,C,P,……表R的真理想子環,小寫字母a,b,c,x,y等表R的元.符號Ax~(-1)表示R中一切能使xy∈A的y所組成的集.容易證明Ax~(-1)是一個理想子環,並且Ax~(-1)A.如果Ax~(-1)A,則說x不素於A,否則說x素於A.這樣一來,A是素理想子環的充要條件就是R中凡不屬A的元都素於A.     

REMARKS ON QUASI-PERFECT RINGS AND FC-RINGS

设Ｒ是有单位元的环，Ｓ是Ｒ的几乎优越扩张，Ｇ是有限群且｜Ｇ｜－１∈Ｒ．证明了Ｒ是ＦＣ－环（拟完备环，凝聚环）当且仅当Ｓ是ＦＣ－环（拟完备环，凝聚环），也当且仅当Ｓｍａｃｈ积Ｒ＃Ｇ＊是ＦＣ－环（拟完备环，凝聚环）．     

ON ANTISIMPLE GAMMA RINGS

ABSTRACT

In this note, we define the antisimple radical, A(M), of a Γ-ring M. A(M) is shown to be a special radical, and two characterizations of antisimple rings due to Szész are extended to Γ-rings. If R is the right operator ring of M, then A(R)* = A(M), where A(R) is the antisimple radical of R. If m,n are positive integers, then A(M_mn) = (A(M))_mn, where M_mn denotes the group m x n matrices over M, considered as a Γ_nm -ring with the operations of matrix addition and multiplication.     

LINEAR ORDERS ON RINGS

The general ideas introduced in Radeleczki and Szigeti (2004) are adapted to investigate quasi cones and cones of rings. Using the finite extension property for cones, we answer the question concerning when a compatible partial order of a ring has a compatible linear extension (equivalently, when the positive cone of this order is contained in a full cone). It turns out that, if there is no such extension, then it is caused by a finite system of polynomial-like equations satisfied by some elements of a certain finite subset of the ring and some positive elements.     

A NOTE ON POLYNOMIAL RINGS OVER VON NEUMANN REGULAR RINGS

Abstract

Let R be an associative ring with 1. It is well known (see [1], [2]) that if R is commutative, then R is Yon Neumann regular (VNR) <=> the polynomial ring S = R[x] is semihereditary. While one of these implications is true in the general case, it is known that a polynomial ring over a regular ring need not be semihereditary (see [3]). In [4] we showed that a ring R is VNR <=> aS + xS is projective for each a ε R. In this note we sharpen this result and use it to show that if c is the ring epimorphism from R[x] to R that maps each polynomial onto its constant term, then R is Yon Neumann regular <=> the inverse image (under c) of each principal (right, left) ideal of R. is a principal (right. left) ideal of R[x] generated by a regular element. (Here an element is regular if and only if it is a non zero-divisor).     

准正则环与正则环

每一个主左理想均由一个幂等元生成的环叫正则环。每一个左理想均由若干个幂等元生成的环叫准正则环。本文研究准正则环与正则环的一些性质，讨论准正则环成为正则环的一些条件，准正则环、正则环与Ｖ环之间的关系，准正则环成为Ａｂｅｌ正则环的条件。     

关于完全环与Noether环

（ｉ）环Ｒ是左完全环，当且仅当存在一个基数ｃ，使得任意平坦左Ｒ－模是一个拟投射模和一个ｃ－限制的ＥＳ－模的直和。（ｉｉ）Ｒ是左Ｎｏｅｔｈｅｒ环，当且仅当存在一个基数ｃ，使得任意内射左Ｒ－模的直和是一个（拟）连续模和一个ｃ－限制的ＥＳ－模的直和。