幂零Hall π—子群的正规补

设Ｈ是有限群Ｇ的幂零Ｈａｌｌ π－子群，则Ｈ存在正规补的充要条件是（１）ＮＧ（Ｈ）／ＣＧ（Ｈ）是π－群；（２）Ｈ存在中心列，其每个子群在Ｈ中关于Ｇ弱闭。     

子群为特征的或自正规的群

群Ｇ的子群Ｈ称为特征的．若对Ｇ的所有自同构ａ都有Ｈ￣ａ≤Ｈ；群Ｇ的子群Ｈ称为自正规的，若Ｈ的正规化子一致于Ｈ，即Ｎ＿Ｇ（Ｈ）＝Ｈ，本文完全确定了每个子群为特征的或自正规的有限群。     

有限群的可解性

Ｇ为有限群，Ｈ≤Ｇ，如果Ｘ∈Ｇ，Ｈ与Ｈｘ在〈Ｈ，Ｈｘ〉中共轭，则说Ｈ是Ｇ的予正规子群，文章利用群Ｇ的予正规性给出了Ｇ为可解群的判别定理     

几个超可解性定理的推广

设Ｎ是有限可解群Ｇ的正规子群,使得Ｇ／Ｎ超可解,若Ｆ（Ｎ）的极小子群在Ｇ中Ｃ－正规,且以下条件之一被满足,则Ｇ超可解：（１）Ｆ（Ｎ）的４阶循环子群在Ｇ中Ｃ－正规;（２）Ｇ中不含Ｄ２ｑ型子群。     

不可数一般线性群的小指数特征

使用连续流统假设，证明了如下结论：设Ｖ是可数数域Ｆ上的Ｎ１－维向量空间，Ｇ＝ＧＬ（Ｖ）是Ｖ的一般线性群，Ｈ是Ｇ的子群，并且１Ｇ：Ｈ１＜２＾Ｎ１，则存在Ｖ的可数维子空间Ｘ，使得Ｇ（ｘ）≤Ｈ≤Ｇ（ｘ）     

偏序群的幂群

本文讨论了偏序群Ｇ的偏序幂群与Ｇ的关系，并得到了ｌ－群Ｇ的一致ｌ－幂群的凸子群、素子群、正则子群、稠密子群、Ｎ－子群、ｎ－子群、弱稠密子群Ｇ的相应子群的关系。     

关于带作用群的有限群的幂零性

设Ｇ是一个有限群，Ｇ的自同构群Ａ作用于Ｇ，且（｜Ａ｜，｜Ｇ｜）＝１．在未假设Ｃ＿ｃ（Ａ）＝１的情形下，证明了关于群Ｇ幂零性的几个充分条件，其中主要定理为：定理２．４设Ａ≤Ａｕｔ（Ｇ）（｜Ａ｜，｜Ｇ｜）＝１，若Ｇ有Ａ－不变的幂零π－Ｈａｌｌ子群Ｈ，且Ｈ的Ｓｙｌｏｗ２－子群Ｈ＿２为Ａｂｅｌ群，对则Ｇ幂零。     

有限特殊射影酉群U3（q）的一个新刻划

设Ｇ为有限群，如对每一个质数ｒ都有│ＮＧ（Ｒ１）│＝│ＮＵ３（ｑ）（Ｒ２）│，那么Ｇ≌Ｕ３（ｑ），此处Ｒ１∈ＳｙｌｒＧ，Ｒ２∈Ｓｙｌｒ（Ｕ３（ｑ）），ｑ≥３。     

M=A5,A6时Thompson猜想的证明

设Ｇ为有限群，Ｎ（Ｇ）＝｛ｎ｜Ｇ有共轭烃Ｃ使│Ｃ│＝ｎ｝，Ｍ为非Ａｂｅｌ单群，证明了Ｍ为有限单群Ａ５，Ａ６时Ｔｈｏｍｐｓｏｎ猜想成立。     

关于Mal’cev定理的注记

设Ｇ是有限生成的超Ａｂｅｌ群,若对每个Ｈ≤Ｇ,Ｈ＝∩／Ｋ≤Ｇ／Ｈ≤Ｇ／Ｈ≤Ｋ,／Ｇ：Ｋ／〈∞／,则Ｇ是个多重循环群,这个结果可部分地盾成Ｍａｌ’ｃｅｖ的一个有名定理的逆命题。     

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     

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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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has