代数L-domain的表示定理及其相关范畴性质

引人局部条件并半格(简记为L-cusl)及其理想完备化等概念．证明了：任一代数L-domain的紧元集是L-cusl，任一代数L-domain是其紧元集赋予A1exandrov拓扑时的Sober化；任一L-cusl的理想完备化是代数L-domain，从而得到了代数L-domain的表示定理．还证明了Scott连续映射为态射的代数L-domain范畴为L-cusl与单调映射作成的范畴的反射于范畴．     

两类代数Domain范畴的等价

首先证明了一个Domain范畴与它的等价范畴有相同的笛卡儿闭性，其次通过引入两类新的偏序集即L-偏序集和B-偏序集，构造了范畴LPOSa（由L-偏序集与逼近关系组成）和范畴BPOSA（由B-偏序集与逼近关系组成），并证明了它们分别与代数L-domain范畴ALD和代数be-domain范畴ABD等价．     

L-子坡代数范畴及其性质

研究L-子坡代数范畴L-SInc的性质,首先给出了L-子坡代数范畴的定义,证明了其为坡代数范畴上的拓扑范畴,给出了其中等子和乘积的构造,证明了它有拉回.其次,定义了坡代数L-余塔的概念,以及由所有坡代数L-余塔构成的范畴IncCL,证明了在一定条件下,范畴L-SInc与范畴IncCL同构.     

模糊Quantale范畴的性质

引入了模糊Quantale的概念,证明了模糊Quantale范畴同构于L-代数范畴,于是从范畴论的角度说明L-代数也可以看成是Quantale的模糊化结构;给出了模糊Quantale范畴中的极限的具体结构,同时证明了该范畴是完备范畴;给出模糊Quantale范畴中逆系统的逆极限结构,引入了两个逆系统之间映射的定义,由此导出两个逆系统的逆极限之间的极限映射.     

L-预拓扑空间的局部连通性

在L-闭包空间的连通性基础上定义了L-预拓扑空间的局部连通性,并给出了局部连通的L-预拓扑空间的等价刻画,然后讨论了局部连通L-预拓扑空间的一些性质.最后证明了局部连通L-预拓扑空间与连续映射构成的范畴是一个弱拓扑范畴.     

几乎代数基与有界完备domain

研究几乎代数dcpo的性质,并得到如下主要结果:1)具有可数几乎代数弱闭基的有界完备domain构成的范畴是Cartesian闭的;2)对每个具有(可数)几乎代数基的dcpo,其相容下幂domain是一个具有可数几乎代数弱闭基的有界完备domain.     

Domain函数空间代数性的一个注记

利用步函数讨论了domain函数空间的代数性,证明了当D是Lawson紧的代数domain,L是一个特定的非L-domain的连续domain时,函数空间[D→L]是代数的.     

L-序代数的内射壳

讨论L-序代数范畴的内射性, 证明L-序代数范畴中的M^≤-内射对象恰是L-并代数, 并给出L-序代数范畴中一类特殊L-序代数的M^≤-内射壳的具体形式.     

模糊完备格范畴中的乘积和余积

讨论了以L-模糊完备格为对象、以保任意L-模糊集并的映射为态射的L-模糊完备格范畴LSUP中的乘积和余积,给出了乘积和余积的具体结构,推广了经典完备格范畴的结论,为研究此范畴的其他性质打下了基础。     

L-序代数的内射壳

讨论L-序代数范畴的内射性, 证明L-序代数范畴中的M^≤-内射对象恰是L-并代数, 并给出L-序代数范畴中一类特殊L-序代数的M^≤-内射壳的具体形式.     

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     

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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