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共有20条相似文献,以下是第1-20项 搜索用时 78 毫秒

1.  Some Properties of Artin-Rees Modules and Rings  
   王文举  张力宏《东北数学》,1997年第3期
   The class of Artin-Rees modules is large.It contains modules satisfying (accr).In this paper, we investigate such modules and show that some properties of modules satisfying (accr) can be generalized to modules of this class.    

2.  几乎余挠模  
   毛立新《东北数学》,2006年第22卷第1期
   In this paper, we introduce the concept of almost cotorsion modules. A module is called almost cotorsion if it is subisomorphic to its cotorsion envelope. Some characterizations of almost cotorsion modules are given. It is also proved that every module is a direct summand of an almost cotorsion module. As an application, perfect rings are characterized in terms of almost cotorsion modules.    

3.  偏倾斜模和倾斜模的分次与非分次性质  
   郑敏  陈清华《数学研究与评论》,2009年第29卷第2期
   This paper gives the relationships among partial tilting objects (tilting objects) of categories of graded left A-modules of type G, left A-modules, left Ae-modules and A#-modules, and then proves that for graded partial tilting modules, there exist the Bongartz complements in the category of graded A-modules.    

4.  Relations between simplicial groups, 3-crossed modules and 2-quadratic modules  
   Hasan ATK  Erdal ULUALAN《数学学报(英文版)》,2014年第30卷第6期
   In this paper, we define two-quadratic module and explore the relations among two-quadratic modules, three-crossed modules and simplicial groups.    

5.  Extension closure of relative syzygy modules  被引次数:7
   黄兆泳《中国科学A辑(英文版)》,2003年第46卷第5期
   In this paper we introduce the notion of relative syzygy modules.We then study the extensionclosure of the category of modules consisting of relative syzygy modules(resp.relative k-torsionfree modules).    

6.  ABSOLUTELY E-PURE MODULES AND E-PURE SPLIT MODULES  
   阎舫宇《数学物理学报(B辑英文版)》,2011年第31卷第1期
   We first introduce the concepts of absolutely E-pure modules and E-pure split modules. Then, we characterize the IF rings in terms of absolutely E-pure modules. The E-pure split modules are also characterized.    

7.  The PZT optical fiber phase modulator testing with varying amplitude modulation  
   YANG Yuanhong  MA Jing  ZHANG Weixu《Chinese Journal of Lasers》,1994年第3卷第6期
   The PZT optical fiber phase modulator testing with varying amplitude modulation¥YANGYuanhong;MAJing;ZHANGWeixu(TabsibResearch...    

8.  Essentially normal Hilbert modules and K-homology Ⅲ:Homogenous quotient modules of Hardy modules on the bidisk  
   Kun-yu GUO & Peng-hui WANG School of Mathematics  Pudan University  Shanghai 200433  China《中国科学A辑(英文版)》,2007年第3期
   In this paper, we study the homogenous quotient modules of the Hardy module on the bidisk. The essential normality of the homogenous quotient modules is completely characterized. We also describe the essential spectrum for a general quotient module. The paper also considers K-homology invariant defined in the case of the homogenous quotient modules on the bidisk.    

9.  Controlling hyperchaos in erbium—doped fibre laser  被引次数:1
   张胜海  沈柯《中国物理》,2003年第12卷第2期
   The dual-ring erbium-doped fibre laser shows a hyperchaotic behaviour under some conditions.The hyperchaotic behaviour can be well controlled to enter into periodicity by modulating the pumping in one of the two rings.The period is different for different modulation index at the same modulation frequency,or for different modulation frequency at the same modulation index.    

10.  关于有理模和余理想子代数的性质  被引次数:1
   张良云《东北数学》,2000年第16卷第3期
   In this paper, for some used conceptions and notations, we see [1] and [2].§1. Rational Module and Its Exact Sequence In [1], Cai Chuanreng and Cheng Huixiang have proved that relative Hopf modules and rational modules are one by one corresponding. In [2], Zhang Liangyun has given the dual relationship between relative Hopf modules. Naturally, we have a question to ask: is the dual module of a rational module still a rational module? This answer is affirmative. Let H be a Hopf …    

11.  Characteristic modules and tensor products over quasi-hereditary algebras  
   Yue-hui ZHANG~《中国科学A辑(英文版)》,2007年第50卷第8期
   Let A be a monomial quasi-hereditary algebra with a pure strong exact Borel subalgebra B.It is proved that the category of induced good modules over B is contained in the category of good modules over A;that the characteristic module of A is an induced module of that of B via the exact functor-(?)_B A if and only if the induced A-module of an injective B-module remains injective as a B-module.Moreover,it is shown that an exact Borel subalgebra of a basic quasi-hereditary serial algebra is right serial and that the characteristic module of a basic quasi-hereditary serial algebra is exactly the induced module of that of its exact Borel subalgebra.    

12.  On Projective Modules with Constant Ranks  
   陈焕艮《数学季刊》,1996年第11卷第3期
   On Projective Modules with Constant RanksIn this paper,we investigate module structures of rings over which every finitely generated projective module with constant rank is stably free. As applications,we give characterizations of some related rings.    

13.  关于$(m,n)$-凝聚模与预包络  
   宋贤梅  陈建龙《数学研究与评论》,2008年第28卷第1期
   In this paper, let m, n be two fixed positive integers and M be a right R-module, we define (m, n)-M-flat modules and (m, n)-coherent modules. A right R-module F is called (m, n)-M-flat if every homomorphism from an (n, m)-presented right R-module into F factors through a module in addM. A left S-module M is called an (m, n)-coherent module if MR is finitely presented, and for any (n, m)-presented right R-module K, Hom(K, M) is a finitely generated left S-module, where S = End(MR). We mainly characterize (m, n)-coherent modules in terms of preenvelopes (which are monomorphism or epimorphism) of modules. Some properties of (m, n)-coherent rings and coherent rings are obtained as corollaries.    

14.  Photonic generation of amplitude-and phase-modulated microwave signals with frequency and modulation bit-rate tunability  
   刘双  钱祖平  王荣  蒲涛  方涛《中国光学快报(英文版)》,2012年第12期
   A photonic approach for the generation of an amplitude- and phase-modulated microwave signal with tun-able frequency and modulation bit-rate is proposed and demonstrated. Two coherent optical wavelengths are generated based on external modulation by biasing a Mach-Zehnder modulator (MZM) at the minimum transmission point to generate ±1-order optical sidebands while suppressing the optical carrier. The two sidebands are sent to a circulator and are then spectrally separated by a fiber Bragg grating notch filter. With one sideband being amplitude-modulated at another MZM and the other being phase-modulated at a phase modulator, a frequency-tunable amplitude-and phase-modulated microwave signal is generated by beating the two sidebands at a photodetector. The proposed technique is investigated theoretically and experimentally. As a result, a 20-GHz amplitude-modulated, 20-GHz phase-modulated, and 25-GHz amplitude-and phase-modulated microwave signals with tunable modulation bit-rate are experimentally generated.    

15.  限制李超代数的诱导模  被引次数:1
   刘文德《东北数学》,2005年第21卷第1期
   In this paper we first prove the PBW theorem for reduced universal enveloping algebras of restricted Lie superalgebras. Then the notion of an induced module is introduced and the dimension formula of induced modules is established. Finally, using the results above, we obtain a property of induced modules pertaining to automorphisms of Lie superalgebras and isomorphisms of modules.    

16.  关于不可分解模与块的注记  
   吕克伟《东北数学》,2003年第19卷第3期
   In this paper, we study the relation between block invariants and indecomposable modules.    

17.  Yetter-Drinfel'd模与卷积Hopf模  
   张良云  王栓宏《东北数学》,2002年第18卷第1期
   In this paper, we first give a sufficient and necessary condition for a Hopf algebra to be a Yetter-Drinfel'd module, and prove that the finite dual of a Yetter-Drinfel'd module is still a Yetter-Drinfel'd module. Finally, we introduce a concept of convolution module.    

18.  On the Auslander-Reiten Quiver with OrientedCyclesof Representation-finite Algebras  
   Yao Hailou 《数学季刊》,1998年第3期
   §1. IntroductionLetAbeanartinalgebra,modAbethecategoryoffinitelygeneratedrightA-modules,ΓAbeitsAuslander-Reitenquiver,thenthereisanonzeromapbetweenanytwonon-isomorphicmodulesinmodAifandonlyifthereisapathbetweenthetwoverticescorrespondingtothesetwomod…    

19.  On generalized k-syzygy modules  
   Chong-hui HUANG & Zhao-yong HUANG Department of Mathematics  Nanjing University  Nanjing 210093  China   College of Mathematics and Physics  Nanhua University  Hengyang 421001  China《中国科学A辑(英文版)》,2007年第50卷第5期
   In this paper, we first introduce the notion of generalized k-syzygy modules, and then give an equivalent characterization that the class of generalized k-syzygy modules coincides with that ofω-k-torsionfree modules. We further study the extension closure of the category consisting of generalized k-syzygy modules. Some known results are obtained as corollaries.    

20.  A Characterization of Continuous Module Homomorphisms on Random Semi—Normed Modules and Its Applications  被引次数:1
   TieXinGUO《数学学报(英文版)》,2003年第19卷第1期
   In this paper,a characterization of continuous module homomorphisms on random seminormed modules is first given;then the characterization is further used to show that the Hahn-Banach type of extension theorem is still true for continuous module homomorphisms on random semi-normed modules.    

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