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1.
L-关系方程T(a,x)=b,I(a,x)=b的解集   总被引:3,自引:0,他引:3  
讨论方程T(a,x)=b,I(a,x)=b的解集,其中L为完备Brouwer格,T为无穷∨-分配伪t-模,I是无穷∧-分配蕴涵算子,且I=I(T)。  相似文献   

2.
设N是一个分配生成(distributively-gnerated)素近环,中心为Z,I是N的非零理想,d是N的一个非平凡微商。若N满足下列条件之一,则N必为可换环。1、对任意x∈I,d(x)∈Z;2、N是2一扭自由的,对任意x∈I,d2(x)∈Z;3、到任意x∈I,x-d(x)∈Z  相似文献   

3.
研究了( ψij^α (I) )与I的分次Betti数间的关系;I为单项式理想时,存在整数序列(i1,j1),…,(ir,jr)满足ik〈jk,k=1,…,r,使得in( ψrrjr^α (…in(ψi1j1^α ( I ) )… ) )为强稳定理想,且in( ψirjr^α(…in( ψi1j1^α ( I ) )… )是唯一的.  相似文献   

4.
刻画了Fuzzy格中理想的最小同余扩张,设I为Fuzzy格F的任一理想,令Tc(I)={x∈F|Ed∈I,使得x∧d’≤d∧d’),则Tc(I)是F中包含I的最小同余理想.证明了正规Fuzzy格(或Kleene代数)F中,理想E={x∧x’|x∈F}的最小同余扩张是一个W-理想,即存在唯一的同余关系以它为核.  相似文献   

5.
基于模糊推理的全蕴涵三I算法,给出了当蕴涵算子→为蕴涵格中的蕴涵算子(称为IL型蕴涵)时的三I算法和α-三I算法的表达式,并进一步讨论了IL型三IMT算法.给出了IL型三I算法、三IMT算法具有P-还原性的充分条件.证明了IL型三I算法是P-还原的,如果存在a∈X,使A(a)=1;IL型三IMT算法是P-还原的,如果存在b∈Y,使B(b)=0.  相似文献   

6.
讨论3I方案下的Fuzzy推理算法,包括FMP3I方案,FMAα-3I方案,Zadeh型FMP3I算法,θ0-型FMP3I算法,θ0-型FMT3I算法θ0-型FMPα-3I算法,θ0-型FMTα-3I算法。  相似文献   

7.
令G为PSp(2,1)的离散子群,并且定义PSp(2,1)中元素,的等距球记为I(f),设定Int/(f),Ext/(f)分别表示I(f)的内部和外部,得出一个重要结果:f(I(f))=I(f^-1);f(ExtI(f))∪→IntI(f^-1);f(IntI(f))∪→ExtI(f^-1).  相似文献   

8.
从人18周胎脑中提抽mRNA,建立cDNA文库,通过大规模测序克隆出一条人类基因,该基因全长1644bp,开放阅读框1146bp,编码一个含372个氨基酸的蛋白,预测分子质量约为46.8ku,经与蛋白数据库比较,发现具有人硫氧还原蛋白结构,命名为人的类硫氧还蛋白基因I(human THioredoxin like gene I,hTRXL I),多组织膜Northern blot结果显示在心脏,脑,胎盘,肝,骨骼肌,肾,胰腺等各个组织中均有表达,肺中表达不明显,通过Unigene染色体定位,将hTRXL I定位于11q11,把hTRXL I的读框克隆人经改造的PBV220质粒中,在E,coli中诱导后获得表达。  相似文献   

9.
《上海信息化》2008,(3):89-89
在四川省文化厅、四川I省电信公司联合召开的网络文化行业发展高峰论坛上,双方协议共建“四川文化专网”,为四川I省文化大发展大繁荣服务。  相似文献   

10.
碘(Iodine)是人体(包括所有的动物)必需的微量元素,为卤族元素之一,原子序数53,原子量126.9。自然界中只有一种稳定的同位素53^127I;另有32种放射性同位素,其中以53^131I用途最广。分子式I2。碘为紫灰色晶体,密度4.93克/厘米^3,熔点131.5℃,沸点184.35℃。  相似文献   

11.
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.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
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.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
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.  相似文献   

14.
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.  相似文献   

15.
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。  相似文献   

16.
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.  相似文献   

17.
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-  相似文献   

18.
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-  相似文献   

19.
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  相似文献   

20.
<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  相似文献   

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