关于叶果洛夫定理和Lebesgue定理的扩展

叶果洛夫定理和Lebesgue定理中共有的条件“fm（m=1,2,…）是E上几乎处处有限的可测函数”可以减弱为“f（m=1,2,…）是E上的可测函数”;“f有限a.e于E”可减弱为“f有限a.e于E或f无限a.e于E”。给出在这种条件减弱的情况下三种收敛的关系。     

有界闭集上的(R)积分及积分收敛定理

本文定义了R~(?)中有界闭集E上的Riemann积分,给出可积充要条件,研究了这一积分与Lebesgue积分的关系,并导出相应的积分收敛定理.     

Banach空间中的(E'''')拓扑与(E'''')完备性

本文介绍了Banach空间中元列的(E′)收敛性,它是介于弱收敛与强收敛二者之间的一种收敛性。文中给出了作者和前人所得到的一序列结果,最后又引入了(E′)完备性的概念,并证明了自反Banach空间关于(E′)收敛的完备性。     

幂级数和函数分析性质的一种证明

作者在文 [1]中给出了幂级数在收敛区内连续性的一种证明 ,本文直接利用幂级数的收敛性 ,给出幂级数和函数在收敛区间上的分析性质的一种简捷证明。并举例说明方法的实用性     

Lp空间上几种收敛性的关系

主要探讨了在Lp空间上几种收敛性的关系,给出了弱收敛的充要条件以及弱收敛与强收敛之间的关系,并且相应的给出了一些推论,证明了弱收敛的充要条件和有关弱收敛与强收敛之间的关系,并用举例说明了定理的一些特殊情况.     

关于Гельфанд的一个定理

对可分的Banaoh空间E证明了下列命题:E中的点集A为列紧的充要条件是:E上任何一串逐点收敛的连续线性泛函皆在A上一致收敛。原来的陈述是对于一般(B)空间来说的,但是他的证明中关于不可分情况的论证是错误的。Phillips很早就已指出这点。     

模糊数序列的水平收敛与隶属收敛的联系

在不确定型优化、模糊信息处理以及模糊控制等许多实际问题中,通常采用在某些水平上通过水平截集将不确定问题局部清晰化,因而探讨模糊数按照隶属函数收敛与按照水平截集收敛之间的联系具有非常重要的意义。引入了模糊数序列的隶属收敛和水平收敛的概念,讨论了这2种收敛性之间的关系,得到了水平收敛的要求强于隶属收敛,给出了这2种收敛等价的充分必要条件。     

函数项级数非一致收敛性判别中的一个问题

们=我.n n(x)在点集E上的和函数是S(x),S。(X)=习u、(x)k二1(x)不一致收敛于S(X)(X〔E)!S(x)一S。(x){不一致收敛于O8)0,丫N任I十(I 表示自然数集),曰n>N(n任I )及x任E,使得(x)不一收敛于S(x)(x〔E)令今存在数列I二_l(x〔E,从而把证明函数项级数不一致收敛的问题转化为求一正项     

局部凸线性拓扑空间上的弱拓扑

<正> 弱拓扑是现代数学中许多分支的重要基础。1970年 Halmos.P.R 对 Hilbert 空间上的弱拓扑进行了综合性的讨论.他指出 Hilbert 空间的闭单位球是弱紧的[6].本文对寸部凸线性拓扑空间(简称局部凸空间)上的弱拓扑作进一步的探讨。一、赋范线性空间上的弱拓扑设 E 为赋范线性空间,E~#为 E 的共轭空间.在 E 中讨论过元素列{x_n}的强收敛和弱收敛。弱收敛是由距离拓扑 d(x·y)=||x-y||所确定的收敛,对于弱收敛引入如下的弱拓扑.     

关于可测函数列收敛性的注记

讨论可测函数列依测度收敛与近一致收敛之间的关系，并给出Riesz定理的推广：若fn→f于E，则存在子列{fni}包含{fn},使fni近一致→f于E。     

Markedness and its Interpretation in Language Use

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.     

Features of Women's language

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.     

低渗透非均质砂岩油藏启动压力梯度研究

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。     

On Tragic Consciousness In The Works By Ernest Hemingway

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.     

Achieving Unusual States of Matter Under High Pressure

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-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

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-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

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     

Call for Papers

<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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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