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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. 相似文献
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奚欧根 《高校应用数学学报(A辑)》1999,(1):105-109
本文旨在系统阐述WeakerГN-环的五个谐零根,它们分别是:强谐零根Ns,拟强谐零根NQs,谐零根N, 谐零NQ以及B-谐零根NB,最后还证明了五个谐零根之间的关系。 相似文献
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本文称环Ω的左(右)理想A为因子幂零的,如果对于任意元素r∈Ω,均有正整数m=m(r),使得Amr={0}.称Ω的一个左理想L为关于元素b∈Ω的左因子,如果Lb≠{0}.定理4 设R是环Ω的因子幂零右理想,那么R+ΩR是Ω的一个因子幂零理想.定理7 设Ω具有局部左因子极小条件,那么Ω的任意诣零左理想必是因子幂零左理想.本文指出因子幂零性是介于幂零性与诣零性之间的一种性质,更接近幂零性。 相似文献
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本文研究了Morita Context环C的T-幂零性、T-幂等性、T-稳定性和周期性、弱周期性、广义周期性、拟周期性.利用经典环论方法,获得了C的上述性质与C中A, B, V, W的性质之间的关系. 相似文献
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设(L, ,·)是一个incline. 本文给出了一个incline上幂零矩阵幂零指标的特征.其结果改进了文[4]中的相应结论. 相似文献
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《代数通讯》2013,41(6):2843-2851
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《Quaestiones Mathematicae》2013,36(1):77-81
The concept of a structural matrix ring was introduced by van Wyk [8]. In [9] certain radicals of these matrix rings are studied. The purpose of this paper is to obtain similar results for a wider class of radicals. 相似文献
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《Quaestiones Mathematicae》2013,36(1-2):1-5
Abstract A family K of right R-modules is called a natural class if K is closed under submodules, direct sums, infective hulls, and isomorphic copies. The main result of this note is the following: Let K be a natural class on Mod-R and M ε K. If M satisfies a.c.c. (or d.c.c.) on the set of submodules {N ? M: M/N ε K}, then each nil subring of End(MR ) is nilpotent. 相似文献
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THE RADICALS OF HOPF MODULE ALGEBRAS 总被引:1,自引:0,他引:1
Zhang Shouchuan 《数学年刊B辑(英文版)》1997,18(4):495-502
THERADICALSOFHOPFMODULEALGEBRASZHANGSHOUCHUAN*AbstractThecharacterizationofH-primeradicalisgiveninmanyways.Meantime,therelati... 相似文献
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《Quaestiones Mathematicae》2013,36(2):129-136
Abstract Nilpotent and solvable ideals are defined and investigated in categories. The relation between the prime radical and the sum of the solvable ideals (which is also a radical) is discussed in categories. For example: If an object satisfies the maximal condition for ideals, then the prime radical is equal to the sum of the solvable ideals. Certain generalizations of theorems in rings, groups, Lie algebras, etc. are also proven, for example: An ideal α: I → A is semiprime if and only if A/I contains no non-zero nilpotent ideals. 相似文献
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The authors first give a necessary and sufficient condition for some solvable Lie algebras with l-step nilpotent radicals to be complete, and then construct a new class of infinite dimensional complete Lie algebras by using the modules of simple Lie algebras. The quotient algebras of this new constructed Lie algebras are non-solvable complete Lie algebras with l-step nilpotent radicals. 相似文献
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《Quaestiones Mathematicae》2013,36(1-4):339-347
Abstract An improved bound is given for the index of nil-potency of a finitely generated nil ring of index n in terms of the index of nilpotency of the ideal generated by Tm where m = [n/2] and T is a m-subset of the set of generators. If m = 3 it is proved that T10 is contained in an ideal generated by twenty-seven cubes and this is applied to get bounds for the index of nilpotency of a finitely generated nil ring of index 6 or 7, bounds which are less than one hundredth of the bounds we obtained in a previous paper. 相似文献
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《Quaestiones Mathematicae》2013,36(4):435-475
Abstract Prime ringsMaybe classified by the sizes of the sets that ‘insulate’ their elements from annihilation. For a cardinal m > 0, the class [Pbar]r,(m) of all rings that are right prime of ‘bound at most m’ is studied, with particular reference to its closure under constructions such as matrix rings, semigoup rings, orders and extensions. The classes [Pbar]r,(m) are special in the sense of radical theory for each m > 0. The attendant upper radicals υ[Pbar]r,(m) are right (and not left) strong; their compatibility with certain ring constructions is examined. In the lattice of radicals (where they form a strictly descending chain), their positions are described, relative to various familiar radicals. 相似文献