R be a non-commutative associative ring with unity 10, a left R-module is said to satisfy property (I) (resp. (S)) if every injective (resp. surjective) endomorphism of M is an automorphism of M. It is well known that every Artinian (resp. Noetherian) module satisfies property (I) (resp. (S)) and that the converse is not true. A ring R is called a left I-ring (resp. S-ring) if every left R-module with property (I) (resp. (S)) is Artinian (resp. Noetherian). It is known that a subring B of a left I-ring (resp. S-ring) R is not in general a left I-ring (resp. S-ring) even if R is a finitely generated B-module, for example the ring M3(K) of 3×3 matrices over a field K is a left I-ring (resp. S-ring), whereas its subring B={[α00βα0γ0α]/α,β,γK} which is a commutative ring with a non-principal Jacobson radical J=K.[000100000]+K.[000000100] is not an I-ring (resp. S-ring) (see [4], theorem 8). We recall that commutative I-rings (resp S-tings) are characterized as those whose modules are a direct sum of cyclic modules, these tings are exactly commutative, Artinian, principal ideal rings (see [1]). Some classes of non-commutative I-rings and S-tings have been studied in [2] and [3]. A ring R is of finite representation type if it is left and right Artinian and has (up to isomorphism) only a finite number of finitely generated indecomposable left modules. In the case of commutative rings or finite-dimensional algebras over an algebraically closed field, the classes of left I-rings, left S-rings and rings of finite representation type are identical (see [1] and [4]). A ring R is said to be a ring with polynomial identity (P. I-ring) if there exists a polynomial f(X1,X2,,Xn), n2, in the non-commuting indeterminates X1,X2,,Xn, over the center Z of R such that one of the monomials of f of highest total degree has coefficient 1, and f(a1,a2,,an)=0 for all a1,a2,,an in R. Throughout this paper all rings considered are associative rings with unity, and by a module M over a ring R we always understand a unitary left R-module. We use MR to emphasize that M is a unitary right R-module."> i-rings和s-rings的围栏 - raybet雷竞app,雷竞技官网下载,雷电竞下载苹果

国际数学与数学科学杂志

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体积 20. |文章ID. 325358 | https://doi.org/10.1155/s0161171297001130.

Mamadou Sanghare. i-rings和s-rings的围栏“,国际数学与数学科学杂志 卷。20. 文章ID.325358 3. 页面 1997年 https://doi.org/10.1155/s0161171297001130.

i-rings和s-rings的围栏

已收到 1993年5月06日
修改 1997年2月13日

抽象的

R. 成为一个非融合的联想戒指,统一 1 0. ,左边 R. 据说 - 摩登满足财产(i)(resp。(s))如果每一个重新注射(rescective)的子宫内骨骺 m 是一套同一性 m 。众所周知,每一个Artinian(REBERISIAN)模块满足财产(I)(RESP。(s)),交谈不是真的。戒指 R. 如果每一个左侧都被称为左侧I形圈(RESP.S-RING) R. - 含有财产(i)(resp。(s))是工匠(resp.neetherian)。众所周知,潜水 B. 左侧戒指(RESP。S-RING) R. 即使是,也不是一般的左I形戒指(resp.s-ring) R. 是一个有限的生成 B. - 模d,例如环 m 3. K. 3. × 3. 矩阵在一个领域 K. 是左我戒指(RESP.S-RING),而其潜水 B. = { [ α. 0. 0. β α. 0. γ. 0. α. ] / α. β γ. K. } 这是一个带有非主雅各逊激进的换向环 j = K. [ 0. 0. 0. 1 0. 0. 0. 0. 0. ] + K. [ 0. 0. 0. 0. 0. 0. 1 0. 0. ] 不是I-Ring(RESP.S-RING)(参见[4],定理8)。我们记得换向I形圈(RESH S-TINGS)的特征是那些模块是循环模块的直接总和的那些,这些叮当是换向的,是主要的理想环(见[1])。在[2]和[3]中已经研究了一些非换向I形圈和S-TING。戒指 R. 如果它是左和右翼的,则是有限的表示类型,并且仅有(达到同构)只有有限数量的有限数量的未分解的左模块。在代数封闭领域的换向环或有限维代数的情况下,左侧旋转的等级,有限表示类型的左S环和环的形式是相同的(参见[1]和[4])。戒指 R. 如果存在多项式,则据说是具有多项式标识的环(P. i-Ring) F X 1 X 2 ...... X N N 2 ,在非通勤中不确定性 X 1 X 2 ...... X N ,在中心 Z. R. 这是其中一个单体 F 最高学位有系数 1 , 和 F 一种 1 一种 2 ...... 一种 N = 0. 对所有人 一种 1 一种 2 ...... 一种 N R. 。在本文中,所有戒指都认为是具有统一的关联环,并由模块 m 在一个戒指上 R. 我们总是理解一个酉左 R. -模块。我们用 m R. 强调这一点 m 是一个单一的权利 R. -模块。

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