有1模格的另一等价定义

有限基代数方程式理论的思想就是要用最少方程来刻画某一代数特征.针对有1模格的格等式定义问题, 提出了一个新的变量个数为7、等式长度为36的等价定义等式,并证明了该等式与原有1模格的定义等式等价.通过比较可以看出,新的等式比已有的结果在变量个数及等式长度上均有明显的改进.     

有1分配格的另一等价定义

本文首先介绍了格、分配格和有1分配格的定义、定理,然后提出了两个新的有1分配格的三条件等价定义,这两个等价定义比原来四条件等价定义的等式个数更少、长度更短,最后根据有1分配格所满足的五条运算律做了与原始定义的等价性证明。     

交换子空间格代数的模中秩1算子的性质

定义了子空间格代数的(弱闭双边)模,对交换子空间格代数的模中的有限秩算子进行了讨论,得到模中含有有限秩算子与含有秩1算子是等价的及模交换子的性质.     

李代数的交叉模

介绍了李代数交叉模的一个等价定义,用等价定义讨论了交叉模等价类之间的运算.对给定的李代数L,P及P.模M,考虑所有以M为核、以P为余核的交叉模的等价类集合,在等价类集中定义加法运算和数乘运算.证明了李代数的交叉模等价类集合是一个线性空闸,且与其三阶上同调群空间同构.最后计算了Virasoro代数的三阶上同调群.     

T-S模的直觉模糊群及其运算

在直觉模糊群定义的基础上,将算子"∧"与"∨"分别推广到T模和S模上,从而定义了关于T-S模的直觉模糊群,给出了其在对偶模意义下的等价定义,并且证明了一个直觉模糊集构成关于T-S模的直觉模糊群的几个等价命题.最后,研究了这种直觉模糊群的一些基本运算问题.     

超半格及其理想的研究

利用半格的等价定义以及超代数运算，引入了超半格的概念，研究了超半格的代数结构、超半格的直积以及超半格的同态．证明了超半格之间的满同态保持吸收元和固定元，给出了超半格的等价刻画．在此基础上又给出了子超半格和超半格的理想的概念，并且研究了它们的同态象、乘积、交并关系及其等价刻画．     

格序模的f一张量积与有限相关f一模

本文证明了格序模f-张量积的存在唯一性,并由此得出一些重要结果;同时给出了有限相关f-模的一个等价条件。     

上连续完备模格的半单性

对于上连续完备模格L,证明了L是局部原子格等价于1是原子的并,也等价于1是独立原子的并,并进一步给出了1可分解为有限个原子并的若干等价条件.     

模函数的性质研究

在格中定义模函数,证明了正模函数全体构成模格以及相互转置的商集是射影的;同时若格中存在合同关系,得出合同组成的格同构于素商全体做成的格,从而推广了JHS定理.     

Virasoro代数的交叉模

通过李代数交叉模的等价定义计算了Virasoro代数的交叉模,证明了Virasoro代数的交叉模等价类只有一个元素,利用Kassel和Loday证明的一一对应关系得到Virasoro代数的三阶上同调群是平凡的.     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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     

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