非阿基米德赋p范空间中等距映射的刻画

本文给出了非阿基米德赋p范空间以及赋(2,p)范空间(0相似文献   

一般赋(2,p)-范空间上的Mazur-Ulam定理的一个注记

本文在赋(2,p)-范空间上引入保内部映射,然后在非严格凸的条件下的一般的赋(2,p)-范空间上证明了Mazur-Ulam定理,使此理论由一般赋2-范空间扩展到一般的赋(2,p)-范空间.     

n-Banach空间与2-赋范空间的光滑性

阎革兴推广了Gahlev中2-赋范空间与n-赋范空间,得到了“n维n-赋范空间是n-Banach空间”,以及有界n-线性泛函的延拓定理。本文对此给出了简单证明;并且证明了:设L是n-Banach空间,则L可以赋范化使之成为Banach空间。此外,本文还引入了2—赋范空间的光滑性概念和共轭空间概念,证明了“2—赋范空间的严格凸与光滑性的对偶定理”和“2—内积空间是光滑2—赋范空间”。     

n-赋范空间与n-内积空间

引入n-内积空间的概念,得到了n-内积空间的一些性质.证明了n-内积空间是n-赋范空间,并给出n-赋范空间成为n-内积空间的一个充要条件.     

拟2-赋范空间凸性

引入拟2-赋范空间的p-凸性,研究拟2-赋范空间严格凸性的一些性质,得到了拟2-赋范空间的严格p-凸性的p-端点刻画.     

关于n-范的一些结果与应用(英文)

本文研究n-范空间的一些性质并构作非标准n-范的若干例子.然后应用n-范概念去引进对任意序列空间以构造序列空间的想法.最后还研究关于诸如线性,范数存在性以及条件完备性等的一些平常事实的构造空间.     

严格凸赋范空间的C0-和的单位球面间的等距

给出一些条件，在此条件下，严格凸赋范空间的C0-和的单位球面上的非满等距算子可以延拓为全空间上的等距算子。     

复一致凸空间的积空间

Vasile和Ioana已证明了两个复严格凸空间的积空间在2范数下是复严格凸的.复一致凸空间是比复严格凸空间更强的空间.文章将证明两个复一致凸空间的积空间在p(1p<∞)范数和∞范数下仍是复一致凸空间.     

非阿基米德n-赋范空间的等距（英文）

讨论非阿基米德n-赋范空间中的Mazur-Ulam定理和Aleksandrov问题.证明了非阿基米德n-赋范空间中的满的n-等距映射是反射的，并且保单位距离是等距的充要条件是其保持零-n-距离.     

赋P范空间上的Aleksandrov问题（0〈p≤1）

研究了赋p范空间上的Aleksandrov问题(0＜p≤1),并给出了赋范空间上的相应结果.     

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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