(Ag)型相容映象的公共不动点定理

目的为了降低公共不动点定理中对映象对相容性的要求,扩展不动点定理的应用范围。方法引进(Ag)型相容映象,再利用度量空间中自映象对的非相容性条件。结果建立了一类具有Φ-压缩条件和(Ag)型相容性的两对非相容映象对的公共不动点定理。结论结果表明:度量空间中,对于具有(Ag)型相容性的非相容映象对,在不要求空间完备和映象连续的情况下就能够得到唯一的公共不动点,并且这个不动点是映象的不连续点。     

多值广义非扩张映象对的不动点逼近

本文构造了Banach空间中多值广义非扩张映象对的不动点迭代逼近序列对,并证明此序列的聚点为映象对的公共不动点。它是文[1],[2]的推广和改进。设S,T:K→C(K)为多值映象,且(?)x,y∈K,满足: H(Sx,Ty)≤ad(x,y) b[d(x,Sx) d(y,Ty)] c[d(x,Ty) d(y,Sx)](*)其中a,b,c≥0,a 2b 2c≤1,则称S,T为广义非扩张映象对。     

关于非相容映象对的公共不动点的一个注记

目的为了降低不动点存在性对空间完备性和映象对的连续性的要求,扩展不动点定理的使用范围。方法引进了痧型弱交换映象,再利用度量空间中自映象对的非相容性条件。结果建立了一类具有矿压缩条件和参型弱交换的非相容映象对的公共不动点定理。结论在度量空间中,对具有垂型弱交换非相容映象对,在不要求空间完备性和映象的连续性的情况下能够得到了公共不动点存在性定理。     

G-度量空间中A_f型非相容映象对的一个新的公共不动点定理

利用自映象对非相容性的条件,在G-度量空间中证明了Af型R-弱交换非相容映象对的公共不动点的定理,并且去掉了G-度量空间的完备性和映象对的连续性条件,得到的结果进一步发展和完善了公共不动点理论方面的有关结果.     

一类压缩映象的公共不动点定理

利用度量空间中自映象对相容和次相容的条件,讨论了完备度量空间中一类压缩映象的公共不动点的存在性与唯一性,得到一个新的公共不动点定理.     

一类新的φ-压缩映象的公共不动点定理

利用度量空间中自映象对相容和次相容的条件,讨论了完备度量空间中一类新的φ-压缩映象的公共不动点的存在性与唯一性,得到了一个新的公共不动点定理,所得结果改进和推广了文献[2]和[6]中的相关结果.     

涉及到四个自映象的一个新的公共不动点定理

利用度量空间中自映象对相容和次相容的条件,讨论了完备度量空间中一类新的ф-压缩映象的公共不动点的存在性与唯一性,得到一个新的公共不动点定理.     

关于Φ-压缩条件下六个映象的公共不动点定理

利用度量空间中自映象对相容和次相容的条件,讨论了完备度量空间中一类Φ-压缩映象的公共不动点的存在性与唯一性,得到了几个新的公共不动点定理.     

一类新的Φ-压缩映象的公共不动点定理

利用度量空间中自映象对相容和次相容的条件,讨论了完备度量空间中一类新的Φ-压缩映象的公共不动点的存在性与唯一性,得到一个新的公共不动点定理.     

一类平方型 Altman 映象的公共不动点定理

在完备度量空间中,利用映象对相容和次相容的条件证明了一类新的平方型Alt-man映象的公共不动点定理,所得结果是这类Altman型映象的公共不动点定理的扩充与发展。     

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