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1.
可交换弱R0代数   总被引:1,自引:0,他引:1  
简化了弱R0代数及R0代数的定义。在弱R0代数的基础上,提出可交换弱R0代数,并讨论了它的一些新的性质。探究了可交换弱岛代数与格蕴涵代数之间的关系,以及与MV代数之间的关系。  相似文献   

2.
引入了Fuzzy代数映射的概念,给出了它的一个分解定理,在此基础上,应用Fuzzy拓扑代数的理论,研究了由Fuzzy代数映射确定的始拓扑的特征和它的若干性质。  相似文献   

3.
本文将普通实数域上四元数可除代数推广到任意域F上四无数代数后,讨论了它是可除代数的充要条件,另外讨论了域F上无限维代数是可除代数的条件。  相似文献   

4.
BEI—代数     
主要是引进了广义结合的BEI-代数概念。讨论了它的一些性质,进而论证BEI-代数是一类比环更广的代数系统,阐明开展BEI-代数与BEI-代数研究工作的背景及理论意义。  相似文献   

5.
本文讨论了代数超曲面的阶等于它在一条直线上的(实和虚)点的个数,代数丛的级等于它通过一个n-2维平面的(实和虚)超平面的个数等代数超曲面性质。  相似文献   

6.
左对称代数是近年从微分几何,李群的研究中提出的一种代数体系,而且当其基域变为任意域时,它与李代数也有密切的关系。但是迄今它没有作为一个独立的领域来研究。我们打算深入研究这类代数体系。本文讨论它的基本理论,以期作为它及相关领域进一步发展的基础.  相似文献   

7.
BZ—代数与BZ1—代数的一些结果   总被引:1,自引:1,他引:0  
研究BZ-代数与BZ1-代数的一些性质,其中有拟交错性,非零不相等元素的不可比较性,可交换性,拟正蕴函性,正蕴涵性以及蕴函性等,讨论了这些性质的相互关系,另外还讨论一类特殊的BZ-代数的构造,得到它的结构定理。  相似文献   

8.
Hom-Lie代数胚是李代数胚的一种自然推广,它的截面空间构成一个Hom-Lie代数,锚映射不再是截面空间同态.基于Hom-Lie代数胚概念定义了Hom-Leibniz代数胚,可以看作是非对称版本的Hom-Lie代数胚,即当截面空间的Hom-Jacobi代数反对称时,它就变为Hom-Lie代数胚.借鉴Leibniz代数的表示,定义了Hom-Leibniz代数胚的在向量丛上的表示.借助于直和空间投射,通过分析Hom-Leibniz代数胚Matched pair,构建了一对Hom-Leibniz代数胚的表示,并分析了它们的相容性条件.由于Hom-Lie代数胚是Hom-Leibniz代数胚的特殊情形,类似定义了Hom-Lie代数胚的表示及Matched pair,并获得了相应结果.  相似文献   

9.
给出非零特征域上导代数DAn的一些性质,得到了DAn关于Bernstein滤子的Rees代数的结构,以及它关于阶滤子的分次代数与Rees代数的结构,并由此给出了DAn与Lie代数、二次型代数的关系  相似文献   

10.
对完备李代数进行系统研究之后,它的一些结果推广到与李代数密切相关的李超代数上,形成了完备李超代数。但完备李超代数的研究仅仅是开始,简要介绍了完备李超代数的较为系统的研究。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

14.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

15.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

16.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

17.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

18.
For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the  相似文献   

19.
Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of  相似文献   

20.
<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with  相似文献   

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