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1.
设E自反,T:D(T)等于包含于E→2^E*,S:D(S)等于包含于E→2^E*极大单调。T+S不必极大单调,给出了θ^*∈(T+S)x在D(T)∩D(S之有界域上有解的一些充分条件。  相似文献   

2.
推广了Banach空中谱测度、可测函数关于谱测度的积分、谱算子及其约当分解到局部凸空间.得到定理1设T∈L(X)为谱算子,E()为其单位分解.定义算子S=Φ(λ),其中λ代表函数f(λ)=λ,称S为T的标部.则(i)D(S)在X中稠,且S是一个闭线性算子.(i)当T∈Lb(X)时,S∈L(X),且N=T-S是一拟幂零算子,NS=SN.(ii)在D(S)上成立T=S+N,其中N满足:任意有界闭集e∈ΣP,NE(e)X是一拟幂零算子,且SN=NS在X的某稠密子空间上成立  相似文献   

3.
证明了如果拟正则半群S的幂等元集E(S)满足以下条件:对任意的e,f∈E(S),存在m∈N,使得(efe)m=(ef)m((efe)m=(fe)m),则σ1={(a,b)∈S×S|e∈E(S),使得ea=eb}(σ2={(a,b)∈S×S|e∈E(S),使得ae=be})是S的最小群同余.  相似文献   

4.
设R是有单位元的环,S是R的Excellent扩张,G是有限群且|G| ̄(-1)∈R.证明了R是右余半遗传环(QF-3环,GV-环)当且仅当S是右余半遗传环(QF-3环,GV-环),也当且仅当Smach积R#G是右余半遗传环(QF-3环,GV-环).  相似文献   

5.
本文证明了,对于一个半群等式公理的有限集E定义的半群簇[E],以下几个问题是可判定的:(1)是否每个S∈[E]都是正则的;(2)是否每个S∈[E]都是单的;(3)是否每个S∈[E]都是群;(4)是否每个S∈[E]都是一致周期的;(5)[E]是否平凡。  相似文献   

6.
讨论了在映射T:Rn→Rm下,点集T(A)Rm与T-1(B)Rn的可测性,研究了映射T的保零测性与保可测性的条件.作为推论证明了:当ERn可测且ARn最多可数时,E+A与E#A都可测,其中E+A=x+a|x∈E,a∈A{},E#A=x#a|x∈E,a∈A{}(x#a=(x1a1,x2a2,…,xnan)).特别地,得到了Lebesgue测度的平移不变性  相似文献   

7.
论述了铁电场效应晶体管(FFET)的基本工作原理,给出了其设计方案.采用SOL-GEL法制备了基本的MFS-FET和MFOS-FET,对其电性能进行了测试分析.测试结果表明:MFOS结构的FFET具有极化存储特性.  相似文献   

8.
基于(∈,∈Vq)-模糊子群和(∈,∈Vq)-正规模糊子群的概念,给出了(∈,∈Vq)-模糊正规化子和(∈,∈Vq)-模糊中心化子的概念及它们的一些性质并讨论了两者之间的关系,然后给出了(∈,∈Vq)-模糊左陪集和(∈,∈Vq)-模糊右陪集的概念,从而给出(∈,∈Vq)-模糊商群和(∈,∈Vq)-商模糊子群的概念,并讨论了它们的性质.  相似文献   

9.
首先给出了连续参数集值下鞅的定义.继而证明了连续参数集值下鞅的三个等价定理:(a)L1wkc(X)值下鞅等价于任给τ1<τ2,τ1,τ2∈T,∫ΩFτ1dP∫ΩFτ2dP;(b)L1fc(X)值下鞅等价于任给s,t∈R+,s<t,S1Fs(Fs)cl{E(g|Fs),g∈S1Ft(Ft)};(c)X可分时,闭凸集值下鞅等价于任给s,t∈R+,s<t,A∈Fs,cl∫AFsdPcl∫AFtdP.最后给出了弱紧凸集值随机集族的弱收敛定理和X有RNP,X可分时闭凸集值右连续下鞅的弱收敛定理.  相似文献   

10.
设FX表示集合上的全变换半群,Con(S)表示半群S上的同余格,对X上任一非平凡等价关系E,令TE(X)=(f∈FX:A↓(a,b)∈E,(f(a),f(b))∈E),据「4」,TE(X)构成一个α半群,且Con(TE(X))可以 三个互不相交的完全子格,其中的一个为「C(E)〈Ca(E)」,本文 TE(X)的同余τ,并证明了当E为单等价关系时,τ是「C(E),Ca(E)」中的唯一原子。  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.
<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   

20.
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