首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   8篇
  完全免费   4篇
  数学   12篇
  2017年   1篇
  2013年   5篇
  2006年   1篇
  2005年   1篇
  2001年   1篇
  2000年   3篇
排序方式: 共有12条查询结果,搜索用时 173 毫秒
1.
In this paper, we shall discuss the conditions for a right SC right CS ring to be a QF ring. In particular, we prove that if R is a right SI right CS ring satisfying the reflexive orthogonal condition (*) and if every CS right R-module is -CS, then R is a QF ring.AMS Subject Classification (1991): 16L30 16L60  相似文献
2.
We introduce the Singleton bounds for codes over a finite commutative quasi-Frobenius ring.  相似文献
3.
证明了环的有限扩张性可以传递到矩阵环上;通过PP环,半遗传环以及有限余非奇异环刻划了有限扩张环,并推广了文献[2]的定理2.1; 对于FGF与CF猜测,给出了部分肯定的回答,即右有限扩张右CF环是右CEP的,从而是右aritian的,改进了文献[6]的定理3.7.  相似文献
4.
潘世忠 《数学学报》2000,43(6):1099-110
一个模嵌入自由模相当于用坐标来表示元素,这在数学上一直有重要意义.理论上, QF-环上的模都可以嵌入自由模,但没有好的算法,影响了它的应用.本文给出QF-环上有限生成模的最小嵌入的一种算法和所嵌入自由模的秩数的估计.  相似文献
5.
对交换环R和B-模范畴上的一个内射余生成元B,我们用相对于E的对偶模的性质刻画了QF环,IF环和半遗传环.  相似文献
6.
证明了Noetherianduo右QF-1环是QF环,并给出了线性紧duo右QF-1环的几个结论  相似文献
7.
A ring R is called left GP-injective if for any 0 ≠ a ∈ R, there exists n > 0 such that a n  ≠ 0 and a n R = r(l(a n )). It is proved that (1) every right Noetherian left GP-injective ring such that every complement left ideal is a left annihilator is a QF ring, (2) every left GP-injective ring with ACC on left annihilators such that every complement left ideal is a left annihilator is a QF ring, and (3) every left P-injective left CS ring satisfying ACC on essential right ideals is a QF ring. Several well-known results on QF rings are obtained as corollaries.  相似文献
8.
We construct a ring R with R = Q(R), the maximal right ring of quotients of R, and a right R-module essential extension S R of R R such that S has several distinct isomorphism classes of compatible ring structures. It is shown that under one class of these compatible ring structures, the ring S is not a QF-ring (in fact S is not even a right FI-extending ring), while under all other remaining classes of the ring structures, the ring S is QF. We demonstrate our results by an application to a finite ring.  相似文献
9.
We refer to those injective modules that determine every left exact preradical and that we called main injective modules in a preceding article, and we consider left main injective rings, which as left modules are main injective modules. We prove some properties of these rings, and we characterize QF-rings as those rings which are left and right main injective.  相似文献
10.
Kui Hu  Fanggui Wang 《代数通讯》2013,41(1):284-293
A domain is called a Gorenstein Dedekind domain (G-Dedekind for short) if every submodule of a projective module is G-projective (i.e., G-gldim(R) = 1). It is proved in this note that a domain R is a G-Dedekind domain if and only if every ideal of R is Gorenstein-projective (G-projective for short). We also show that nontrivial factor rings of Dedekind domains are QF-rings. We also give an example to show that factor rings of QF-rings are not necessarily QF-rings.  相似文献
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号