Banach空间择一性定理与向量极值问题

讨论了Ｂａｎａｃｈ空间约束向量极值问题，给出了Ｂａｎａｃｈ空间择一性定理，据此研究了向量极值问题的最优性条件，对偶定理和鞍点定理。     

关于Banach空间自反性判定的个注记

作为Ｂａｎａｃｈ空间自反性判定定理的一个补充，给出了Ｘ是自反Ｂａｎａｃｈ空间的几个充要条件．     

关于Banach空间自反性判定的一个注记

作为Ｂａｎａｃｈ空间自反性判定定理的一个补充，给出了Ｘ是自反Ｂａｎａｃｈ空间的几个充要条件．     

discharging函数和三色问题

由于Ｇｒｏｅｔｚｓｃｈ，下面的构形是三色可约的：一个五边形连接４个３度的顶点。在Ｇｒｏｅｔｚｓｃｈ三色定理和Ｇｒｕｅｎｂａｕｍ三色定理的证明过程中，证明上述构形的存在性是关键的一步。本文动作２ｄｉｓｃｈａｒｇｉｎｇ函数加以证明。     

集值测度的一些重要性质

讨论了取值于Ｂａｎａｃｈ空间的有界集值测度,获得了集值测定的选择定理,并讨论了具有ＲＮ性质的Ｂａｎａｃｈ上有界集值工的紧性及弱紧性。     

关于抽象函数的逼近

设ｆ（ｘ）是定义在［ａ，ｂ］、取值于实Ｂｎａｃｈ空间的强连续抽象函数，该文讨论用具有抽象系数的多项式逼近ｆ（ｔ）的问题，对自反Ｂａｎａｃｈ空间Ｅ，建立了存在性定理，对严凸空间建立了唯一性定理及特征定理。     

半序Banach空间上映射的本质性和平凡性

给出了半序Ｂａｎａｃｈ空间上映射的本质性和平凡性的几个判定定理，应用它们得到了锥压缩不动点定理的下述推广：定理６设ｘ是ｂｅｎａｃｈ空间，Ｙ是具有锥Ｋ的Ｂａｎａｃｂ空间，Ω＿１和Ω＿２是Ｘ的有界开集，本质，全连续，若则存在使得Ａｘ＝Ｊｘ。     

DISCHARGING FUNCTION AND THE THREE COLOUR PROBLEM

由于Ｇｒｏｔｚｓｃｈ，下面的构形是三色可约的：一个五边形连接４个３度的顶点．在Ｇｒｏｔｚｓｃｈ三色定理和Ｇｒｕｎｂａｕｍ三色定理的证明过程中，证明上述构形的存在性是关键的一步．本文运用ｄｉｓｃｈａｒｇｉｎｇ函数加以证明．     

Banach空间积分微分方程在紧型条件下的可解性

本文在非紧性测度条件下，证明了Ｂａｎａｃｈ空间中积分微分方程的可解性定理     

RN空间上的一致有界定理及开映象定理

Ｈａｈｎ－Ｂａｎａｃｈ定理、一致有界定理、开映象定理是Ｂａｎａｃｈ空间中的三大定理。本文给出ＲＮ空间中一致有界定理与开映象定理。     

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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