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1.
张福利 《数学季刊》2002,17(3):105-106
本文对文[1]中提出的一个公开问题给出解答。证明了超半素根与谢邦杰在[2]中所定义的近似诣零根是相等的。  相似文献   

2.
指出[1]的两个主要结论是不正确的,予以纠正,证明超半素根等于Koethe根,进而修正[2]中的讨论。  相似文献   

3.
The Rings Characterized by Minimal Left Ideals   总被引:4,自引:0,他引:4  
We study these rings with every minimal left ideal being a projective, direct summand and a p-injective module, respectively. Some characterizations of these rings are given, and the relations among them are obtained. With these rings, we characterize seinisiinple rings. Finally, we introduce MC2 rings, and give some characterizations of MC2 rings.  相似文献   

4.
崔建  秦龙 《数学进展》2020,(1):29-38
如果R中每个元素(对应地,可逆元)均可表示为一个幂等元与环R的Jacobson根中一个元素之和,则称环R是J-clean环(对应地,UJ环).所有的J-clean环都是UJ环.作为UJ环的真推广,本文引入GUJ环的概念,研究GUJ环的基本性质和应用.进一步地,研究每个元素均可表示为一个幂等元与一个方幂属于环的Jacobson根的元素之和的环.  相似文献   

5.
HX环的推广   总被引:7,自引:1,他引:6  
在文[1,2]的基础上推广了HX环,提出了弱HX环的概念,并重新讨论了拟商环。证明了在正则条件下拟商环与弱HX环的统一性;同时也得到了一致弱HX环与普通商环的关系。  相似文献   

6.
Let α be an endomorphism and δ an α-derivation of a ring R. We introduce the notion of skew-Armendariz rings which are a generalization of α-skew Armendariz rings and α-rigid rings and extend the classes of non reduced skew-Armendariz rings. Some properties of this generalization are established, and connections of properties of a skew-Armendariz ring R with those of the Ore extension R[x; α, δ] are investigated. As a consequence we extend and unify several known results related to Armendariz rings.  相似文献   

7.
Kwang Jin Choi  Yang Lee 《代数通讯》2018,46(8):3229-3240
Nilpotents in Armendariz and abelian π-regular rings are multiplicatively closed. However, this fact need not hold in many kinds of rings. This article concerns a class of rings whose nilpotents are closed under multiplication. Rings contained in this class are said to be nilpotent-closed, and the structure of nilpotent-closed rings is investigated in relation with various situations which happen ordinarily in the study of noncommutative ring theory. In the procedure, various sorts of rings are investigated, so that they are nilpotent-closed. We also study familiar conditions under which nilpotents in nilpotent-closed rings form a subring.  相似文献   

8.
The reflexive property for ideals was introduced by Mason and has important roles in noncommutative ring theory. We in this note study rings with the reflexivity whose axis is given by maximal ideals (simply, an RM ring) which are a generalization of symmetric rings. It is first shown that the reflexivity of a ring and the RM ring property are independent of each other, noting that both of them are generalizations of ideal-symmetric rings. We connect RM rings with reflexive rings in various situations raised naturally in the procedure. As a generalization of RM rings, we also study the structure of the reflexivity with the maximal ideal axis on idempotents (simply, an RMI ring) and then investigate the structure of minimal non-Abelian RMI rings (with or without identity) up to isomorphism.  相似文献   

9.
This article concerns a ring property called pseudo-reduced-over-center that is satisfied by free algebras over commutative reduced rings.The properties of radicals of pseudo-reduced-over-center rings are investigated,especially related to polynomial rings.It is proved that for pseudo-reduced-over-center rings of nonzero characteristic,the centers and the pseudo-reduced-over-center property are preserved through factor rings modulo nil ideals.For a locally finite ring R,it is proved that if R is pseudo-reduced-over-center,then R is commutative and R/J(R) is a commutative regular ring with J(R) nil,where J(R) is the Jacobson radical of R.  相似文献   

10.
研究了一个环何时具有Armendariz性.使用环论的一般方法,证明了在一定条件下商环、具有一对零同态的Morita Context环以及映射环是Armendariz环,推广了已有的某些结果.  相似文献   

11.
关于GP-V-环与强正则环的刻划   总被引:2,自引:0,他引:2  
肖光世 《东北数学》2002,18(4):291-297
The purpose of this paper is to characterize strongly regular rings via MERT rings and weakly one-sided ideals. Many important equivalent conditions on strongly regular rings are shown.  相似文献   

12.
M. Ahmadi  A. Moussavi 《代数通讯》2020,48(11):4796-4808
Abstract

It is well known that when a ring R satisfies ACC on right annihilators of elements, then the right singular ideal of R is nil, in this case, we say R is right nil-singular. Many classes of rings whose singular ideals are nil, but do not satisfy the ACC on right annihilators, are presented and the behavior of them is investigated with respect to various constructions, in particular skew polynomial rings and triangular matrix rings. The class of right nil-singular rings contains π-regular rings and is closed under direct sums. Examples are provided to explain and delimit our results.  相似文献   

13.
本文引入广义中心α-Armendariz环的概念,得到了广义中心α-Armendariz环的基本性质,研究了广义中心α-Armendariz环与其他环之间的一些关系.  相似文献   

14.
Let M be a monoid. Maximal M-Armendariz subrings of upper triangular matrix rings are identified when R is M-Armendariz and reduced. Consequently, new families of M- Armendariz rings are presented.  相似文献   

15.
α-对称环     
引入α-对称环的概念,讨论了它与其它相关环的关系,证明环R是α-对称环当且仅当R上的n×n上三角矩阵环T_n(R)是α-对称环;若R是α-对称环,则R[x]/(x~n)是α-对称环,其中(x~n)是由x~n生成的理想,n为任意正整数.  相似文献   

16.
Lambek extended the usual commutative ideal theory to ideals in noncommutative rings, calling an ideal A of a ring R symmetric if rst ∈ A implies rts ∈ A for r, s, t ∈ R. R is usually called symmetric if 0 is a symmetric ideal. This naturally gives rise to extending the study of symmetric ring property to the lattice of ideals. In the process, we introduce the concept of an ideal-symmetric ring. We first characterize the class of ideal-symmetric rings and show that this ideal-symmetric property is Morita invariant. We provide a method of constructing an ideal-symmetric ring (but not semiprime) from any given semiprime ring, noting that semiprime rings are ideal-symmetric. We investigate the structure of minimal ideal-symmetric rings completely, finding two kinds of basic forms of finite ideal-symmetric rings. It is also shown that the ideal-symmetric property can go up to right quotient rings in relation with regular elements. The polynomial ring R[x] over an ideal-symmetric ring R need not be ideal-symmetric, but it is shown that the factor ring R[x]/xnR[x] is ideal-symmetric over a semiprime ring R.  相似文献   

17.
研究非交换环上的相对于幺半群的McCoy环和Armendariz环的多项式扩张.对于包含无限循环子幺半群的交换可消幺半群M,证明了若R是M-McCoy(或M-Armendariz)环,则R上的洛朗多项式环R[x,x-1]是M-McCoy(或M-Armendariz)环.  相似文献   

18.
IF环和拟ZIF环   总被引:5,自引:1,他引:4  
朱晓胜 《数学学报》1996,39(2):226-230
本文定义了拟ZIF环.研究了IF环与拟ZIF环的结构.进一步地,讨论了IF环与拟ZIF环的关系,并用拟ZIF环刻划了IF环.  相似文献   

19.
Niels Schwartz 《代数通讯》2013,41(11):3796-3814
The real closed valuation rings, i.e., convex subrings of real closed fields, form a proper subclass of the class of real closed domains. It is shown how one can recognize whether a real closed domain is a valuation ring. This leads to a characterization of the totally ordered domains whose real closure is a valuation ring. Real closures of totally ordered factor rings of coordinate rings of real algebraic varieties are very frequently valuation rings. In particular, the real closure of the coordinate ring of a curve is an SV-ring (i.e., the factor rings modulo prime ideals are valuation rings). Real closed valuation rings play a role in the definition of real closed rings, as well as in the construction of real closures of rings and porings. They can also be used for the study of univariate differentiable semi-algebraic functions. This leads to the notion of differentiablility of semi-algebraic functions along half branches of curves.  相似文献   

20.
关于C-环     
郝秀梅 《大学数学》2001,17(1):26-29
主要讨论了 C-环的结构以及它与其它环类之间的重要关系 ,从而较深刻地刻划这种环  相似文献   

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