Fuzzy测度的绝对连续性及扩张

要建立定义在环上的Fuzzy测度(或更广泛一些的非可加测度)的一般扩张理论是困难的。迄今为止,有关的讨论都局限于某些特殊类型的Fuzzy测度(非可加测度)。在本文中,我们也仅研究一类特殊的Fuzzy测度的扩张,给出它们能从一个代数扩张到包含这个代数的σ-代数上去的条件。     

取值于von Neumann代数的测度

引入了取值于ｖｏｎ Ｎｅｕｍａｎｎ代数的测度，即算子测度；并研究了算子测度的σ－弱可列可加性及延拓。将Ｋｌｕｖａｎｅｋ延拓定理推广到σ－弱可列可加测度，并证明了域上的正规正算子测度在该域所张成的σ－域上有惟一的σ－弱可列可加延拓。     

σ—可加Fuzzy集上的Fuzzy测度

文[2]在σ-可加 Fuzzy 集上提出了可加 Fuzzy 测度的概念,得到了许多与经典测度一致的很好的结果,但在实际问题中往往会出现非可加的情况,本文研究了σ-可加 Fuzzy集上非可加测度(即 Fuzzy 测度)的结构待征及其性质,并说明文[3]中的绝大多数结果是本文的特殊情形。     

关于矢量测度绝对连续性的一个注记

本文在μ是σ—域∑上的有限可加测度的条件下,证明了∑上可数可加矢量测度 F 之μ—连续性与 F 在μ—零集上为零的条件等价,因而改进了有关矢量测度绝对连续性的熟知的 Pettis 定理,同时,修正了所谓“F《μ不同于 F 在μ—零集为零,除非 F 和μ两者均在σ—域∑上是可数可加的”不当说法。     

模糊σ代数上的模糊数值测度及应用(Ⅱ):广义矢值测度的约当分解

(X,A,μ)是一个全有限测度空间．H为由A生成的模糊σ-代数．通过计算H中模糊子集的截集的测度,运用一维模糊数的嵌入定理,构造了一种定义在H上取值于一维模糊数空间的测度,这种测度限制在A上就是测度μ．并且这个测度继承了μ的可列可加性、下连续性、上连续性、自连续性等性质．作为应用之一,在合理定义了广义矢值测度后,得到了约当分解定理,并且这种广义矢值测度就是一个模糊数值测度．     

基于非可加测度的一致性变异测度

建立在经典概率测度理论体系下的风险测度理论已经有了不少的研究成果,但在金融、保险市场中存在着许多的非可加风险,针对传统风险测度理论分析非可加风险的缺陷,研究了在Choquet积分理论基础上的风险变量空间为非可加测度空间的变异测度问题,证明了这种测度是共单调可加一致性的变异测度,给出了在Chance空间共单调可加一致性变异测度的表示定理,这些结论是对风险变异测度理论在非可加条件下的发展,对于分析非可加风险具有重要的理论价值与现实意义。     

环R上σ─有限测度的内测度扩张的新方法

由环Ｒ上的σ－有限测度μ，引出了一个定义在可传σ－环Ｈ（Ｒ）上的一个集函数μ，证明了它与ＰａｕｌＲ．Ｈａｌｍｏｓ由σ－环Ｓ（Ｒ）上的σ－有限测度μ（μ｜Ｒ＝μ）所引出的定义在Ｈ（Ｓ（Ｒ））＝Ｈ（Ｒ）上的内测度μ是一致的，由此指出了环Ｒ上σ－有限测度的扩张的另一条途径．     

环R上σ-有限测度的内测度扩张的新方法

由环Ｒ上的σ－有限测度μ，引出了一个定义在可传σ－环Ｈ（Ｒ）上的一个集函数μ证明了它与ＰａｕｌＲ．Ｈａｌｍｏｓ由σ－环Ｓ（Ｒ）上的σ－有限测试μ（μ｜Ｒ＝μ）所引出的定义在Ｈ（Ｓ（Ｒ））＝Ｈ（Ｒ）上的内测度μ，是一致的，由此指出了环Ｒ上σ－有限测度的扩张的另一条途径。     

μ从（X,A）到（X,σ（A∪｛C｝））上的扩张测度的唯一性定理

本文讨论了σ有限测度μ从（Ｘ，Ａ）到（Ｘ，σ（Ａ∪｛Ｃ｝））上的扩张测度的唯一性问题给出了这种扩张唯一性的四个充分条件。     

μ从（X，A）到（X，σ（A∪｛C｝））上的扩张测度的唯一性定理

本文讨论了σ有限测度μ从（Ｘ，Ａ）到（Ｘ，σ（Ａ∪｛Ｃ｝））上的扩张测度的唯一性问题，给出了这种扩张唯一性的四个充分条件。     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

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     

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