F4型量子群表示的Groebner—Shirshov基

本文以凡型量子群表示的Groebner—Shirshov基为基础,利用双自由模方法给出凡型量子群的有限维不可约表示的Groebner-Shirshov基．     

G2型量子群表示的Grobner—Shirshov基

用单李代数的泛包络代数表示的Grobner-Shirshov基方法,也就是Grobner-Shirshov对（pair）方法,来构造G2型量子群表示的Grobner—Shirshov基是非常苦难的。而用双自由模方法来构造G2型量子群的有限维不可约表示的Grobner—Shirshov基是非常方便的;以已知的G2型量子群的Grobner—Shirshov基为基础．用双自由模方法构造G2型量子群的不可约表示的Grobner-Shirshov基。     

B_3-型量子群的 Gelfand-Kirillov 维数

本文旨在计算B_3-型量子群的Gelfand-Kirillov维数,所用方法是:首先利用RingelHall代数方法计算B_3-型量子群的所有根向量之间的拟交换公式,然后利用相应的B_3-型量子群的Grobner-Shirshov基计算B_3-型量子群的Gelfand-Kirillov维数,得到的主要结果是B_3-型量子群的Gelfand-Kirillov维数等于21.     

XXZ模型的Bethe Ansatz解与量子群的最高权态

一维Heisenberg开链的XXZ模型有量子群SUq(2)的对称性,本文证明能量本征值方程的Bethe Ansatz解是SUq(2)的最高权态,并说明Bethe Ansatz解中的impulsion k可取得使e~(ik)=q。     

An型量子群的基本模的典范基

设g是An型的有限维复单李代数,U是g的量子群.对g的每一个支配权λ,存在一个最高权λ的有限维不可约最高权U-模V(λ).本文确定n≤5时An型量子群的基本模V(λ)(即λ是基本支配权)的典范基.     

当q不是单位根时量子群V_q(sl(2))的表示

研究当q不是单位根时量子群Vq(sl(2))的表示。给出了Vq(sl(2))的无限维的模结构。刻画了当q不是单位根时,Vq(sl(2))的所有单模。证明了当q不是本原单位根时量子群Vq(sl(2))的生成元E和F在有限维的模上的作用都是幂零作用的。还证明了当q不是单位根时,任意有限相同维数的单V-模都是彼此同构的。     

紧量子群与乘法酉算子的关系

通过紧量子群的余乘法的余结合性，在一定的Hilbert空间上构造出了乘法酉算子，并讨论了乘法本算子对应量子群与紧量子群的关系。从而给出了紧量子群的对偶量子群。     

线性李代数中的幂零元素

本文探讨了线性李代数中的幂零元素和该李代数结构之间的关系,给出了利用幂零元素来判断该李代数是否可解、是否殆完全可约的法则,并导出了幂零元素的一种分解式。文章的第二部份探讨了具有巡回幂零元素的线性李代数的结构。     

低阶几乎惯量任意的可约零-非零模式矩阵

运用分析法和列举法,研究低阶几乎惯量任意的可约零-非零模式矩阵。证明4阶可约零-非零模式不存在几乎惯量任意的情形,给出5阶和6阶可约零-非零模式是几乎惯量任意的一个充分条件,以及关于低阶可约零-非零模式中不可约块的几个推论。     

一个基于量子群的分子对接药物设计算法

量子群作为经典李群、李代数的基本对称概念的推广,有着丰富的代数、几何及物理性质.本文基于量子群的基本理论,结合药物分子设计中的分子对接问题,在李群机器学习的基础上提出了一个基于量子群的分子对接药物设计方法,从而进一步丰富了李群机器学习理论.本文首先建立了基于量子群的分子对接模型,并设计了基于量子群生成元的分子匹配算法,运用此算法对小分子数据库中的分子进行对接,并将试验结果与Autodock4.0、分子动力学算法的对接时间和精度进行比较和分析.实例测试表明了量子群的理论与药物分子对接相结合的合理性及有效性.     

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