模李超代数■(2)的诱导模

令g=■(2)是特征p2的代数闭域F上模李超代数,构造了诱导模Ind_g~g+V,刻画其结构.通过计算其最高权向量,证明了诱导模的不可约性.     

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.     

限制李超代数的P-包络的相关讨论

在限制李超代数新定义的基础上讨论了限制李超代数的P-包络,并给出了一些相关的结果:1)每个李超代数L都有一个P-包络;2)设(G,[P],i)是李超代数L的P-包络,ρ:L→pl(V)是L的一个阶化表示,其中V为Z2-阶化向量空间,则存在一个阶化表示ρ^:G→pl(V),使得^ρ是ρ的扩张,并且使得V的每一个阶化L-子模都是阶化G-子模;3)任意限制李超代数都有一个S-约化泛包络代数。     

素特征域上的有限维李超代数∑

对于有限维模李超代数 (即特征 p >0的域上的李超代数 ) ,目前已有的结果尚少 .文献[4 ]构造了Cartan型模李超代数 .本文应用文献 [5 ]的方法 ,构造了有限维模李超代数 ,讨论了它的中心、换位子代数与单性     

关于半单纯李代数的某些Ext~n计算

设g是特征数为0的代数闭域k上的有限维半单纯李代数和G是g的普遍包络代数.用工(λ)表示权λ的不可约最高权g-模.本文我们得到了对于某些不可约最高权g-模的Ext_G(L(μ),L(λ)).我们的结果证明在许多情况下Ext_G(L(μ),L(λ))为0,但是它们不全为零.     

Cartan型李代数W(1,1)的不可约模

利用李代数模表示的性质及诱导模给出了Cartan型李代数W(1,1)的不可约限制模只有p个同构类,同时给出了不可约限制模的具体形式.     

W(2)到Kac模的0阶上同调

确定了特征p≥3的域上Witt型模李超代数W(2)到所有限制以及非限制Kac模K_S(λ)的0阶上同调.得出以下结论:当S=0,λ=(0,2)时,W(2)到限制Kac模K_S(λ)的0阶上同调空间是一维的;否则,W(2)到Kac模K_S(λ)的0阶上同调空间都是零维的.     

单李代数的不可约模上多重线性型空间的研究

研究了复数域上单李代数L的不可约模上多重线性型空间的结构。对三维典型单李代数sl(2,F)的m+1维不可约模V(m),借助于模的张量积方法,讨论了其非零不变多重线性型的存在性。讨论了一般有限维单李代数的情形,得到了两个关于权性质的初步结论。     

特征2上Special代数S(3,1)的极小权向量

通过研究李代数的既约包络代数的极小左理想来研究李代数的不可约模,通过确定生成极小左理想的极大权向量来确定不可约模,给出了特征p=2上的Special代数S(3,1)的特征标χ的高度为0的不可约模和它们的维数.     

有限维李超代数的模表示（英文）

研究了特征大于2的代数闭域上有限维李超代数的表示.证明了有限维李超代数的单模都是有限维的,并且所有单模的维数有上界.进一步,一个有限维李超代数可以嵌入到一个有限维限制李超代数.给出了有限维限制李超代数g上单模的判定准则,定义了g的一个限制李超子代数,得到了该子代数的单模同构类和g的单模同构类之间的一个双射.这些结果是素特征域上李代数相关理论的推广.     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-