Banach空间上的非游荡算子序列

讨论无穷维可分Banach空间上的非游荡算子序列.根据Banach空间上非游荡算子以及Banach空间上的PDE的非游荡算子半群的定义,给出Banach空间上非游荡算子序列的定义,运用特征向量的方法证明在无穷可分解析函数Banach空间上非游荡算子序列的存在性.并给出非游荡算子序列的一些性质.     

Banach序列空间上非游荡算子的存在性

讨论了无穷维可分Banach序列空间上的非游荡算子，这是一类具有混沌特征的线性算子。运用泛函分析的方法证明任一无穷维可分Banach序列空间上非游荡算子的存在性，并给出一个具有实际物理背景的非游荡算子的例子。     

一类非游荡算子的小扰动下的不变性

对于一种新型的线性混沌算子——非游荡算子，研究Banach空间上的一类特殊非游荡算子——可逆线性有界非游荡算子，证明它的小扰动下的不变性．利用矩阵和不变集的方法证明在非游荡算子的一充分小的领域内，非游荡算子保持它的非游荡性不变．即充分靠近非游荡线性算子的可逆线性算子是非游荡的．     

非游荡算子的伪轨跟踪性质的推广及应用

伪轨跟踪性质是动力系统中的重要概念之一,它与系统的稳定性以及混沌都有密切的联系.然而伪轨的概念仅仅局限在有限维紧的度量空间中,将这一工作发展到无穷维可分Banach空间上的线性算子的研究之中,在无穷维可分Banach空间中引进了α伪轨,定义了非游荡常数,给出了在Banach序列空间及其具有物理背景的空间中非游荡算子的α伪轨的例子,运用泛函分析的方法对非游荡算子的伪轨跟踪性质进行了推广,最后利用此性质得到了几个重要的结论,推进和完善了对非游荡算子性质的研究.     

微分算子的一类重要性质

给出了无界算子成为非游荡算子的充分条件,运用特征向量的方法研究了在Bargmann 空间上无界加权后移位算子的非游荡性,由此得出了微分算子在Bargmann空间上是非游荡算 子;最后讨论了微分算子在Hardy空间上的非游荡性.     

Banach空间中非单调算子方程的Mann迭代解

在Banach空间中引入序Lipschitz条件，在非紧性非连续性假设下，运用Mann迭代技巧，研究了非单调算子方程解的存在性，并给出了解的逼近迭代序列．     

非游荡算子的拓扑稳定性

在无穷维可分Banach空间中引进了无环条件和滤子的概念,给出了非游荡算子的滤子的例子,说明了基本集满足无环条件的非游荡算子是存在的,在此基础上给出了非游荡算子的拓扑稳定性定理。     

加权移位算子的非游荡性

以构造的方式,研究了lp(1≤p∞)空间上的加权移位算子B,当其权序数满足一定条件时,具有非游荡性;证明了它经过一恒等算子扰动后,仍可保持这种特性;进而得到了Hilbert空间上的任一有界线性算子关于非游荡算子的分解理论.     

关于Banach空间的一个等价性质

研究了Banach空间中的一个等价性质,证明了Banach空间中Radon-Nikodym性质在一定条件下可以导出有界线性算子的可表示性。这一结果为进一步研究Banach空间中有界线性算子的性质提供了一个新的思路。     

关于两个非线性非单调二元算子的公共不动点定理及其应用

在Banach空间中，利用非线性泛函分析中的锥理论和单调迭代的方法，研究了两个非线性非单调二元算子的公共不动点的存在与唯一性，并给出了逼近公共不动点的迭代序列的误差估计式；然后作为应用，得到了Banach空间中的一类非线性积分方程组的解，改进了最近的一些结果．     

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.     

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     

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

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