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1.
目的 讨论I-fuzzy拓扑空间中的pre-分离公理.方法利用连续值逻辑语义的方法.方法 利用连续值逻辑语义的方法.结果 首先在I-fuzzy拓扑空间框架下引入了I-fuzzy pre-开集、I-fuzzy pre-重域及I-fuzzy pre-闭包等概念,进而在I-fuzzy拓扑空间中讨论了I-fuzzy pre-分离性.结论 得到了I-fuzzy pre-分离性和一些它们的等价命题.  相似文献   

2.
给出了I-fuzzy拓扑空间中准开算子、准拟重邻域系的定义,并讨论了I-fuzzy拓扑空间中的准连续映射的性质。  相似文献   

3.
在I-fuzzy拓扑空间中利用R-邻域系给出了I-fuzzy第一可数性、I-fuzzy第二可数性、I-fuzzy稠密性等概念,并进一步讨论了它们之间的关系.  相似文献   

4.
以L*-格值上Lukasiewicz蕴含算子为工具,给出直觉I-fuzzy拓扑空间中闭包的概念,并讨论了它们的性质,最后研究了直觉I-fuzzy拓扑空间的网及其收敛性.  相似文献   

5.
在定向完备偏序集(即Dcpo)上引入局部拟基和稠密子集族的概念,在此基础上定义了拟连续Domain的特征和浓度.利用局部拟基给出拟连续Domain新的等价刻画,并探讨了拟连续Domain的特征、浓度与该拟连续Domain上赋予Scott拓扑或Lawson拓扑时的拓扑空间的特征、浓度之间的关系.证明了拟连续Domain的特征(浓度)等于其上赋予Scott拓扑时的拓扑空间的特征(浓度),且小于等于其上赋予Lawson拓扑时的拓扑空间的特征(浓度).  相似文献   

6.
在直觉I-fuzzy拓扑空间中,利用直觉I-fuzzy闭包算子引入模糊r,s隔离和模糊r,s连通的概念,研究了模糊r,s连通的直觉I-fuzzy拓扑空间的等价定理和模糊r,s连通的直觉模糊集的一些性质.  相似文献   

7.
本文对Fuzzifying拓扑线性空间做了推广,给出了I-fuzzy拓扑线性空间的定义并重点研究了该空间中的Ifuzzy凸性,讨论了I-fuzzy凸的相关性质.  相似文献   

8.
受文[7]启发,我们减弱余弦算子函数中的强连续性条件,把空间X约定到一个赋有范数拓扑(X,‖.‖)和局部凸拓扑(X,τ)的Banach空间上,同时引入了双连续余弦算子函数的概念,通过研究生成元及其预解式的性质,我们得到了双连续余弦算子函数的生成定理.  相似文献   

9.
实际研究中发现有些问题所对应的半群并不是强连续的,可以在Banach空间上赋予一个比范数拓扑粗的局部凸拓扑",使得半群在"下强连续.基于此在给出了Banach空间上双连续双连续C余弦函数的概念及其性质的基础上,重点讨论了双连续C余弦函数的遍历的定义及性质,得到了在拓扑"意义下的双连续C余弦函数的遍历的若干结果.  相似文献   

10.
在I-fuzzy拓扑空间中引入R-邻域系,利用R-邻域系给出基和子基的概念,研究了基和子基的充分必要条件.  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.
Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.  相似文献   

18.
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   

19.
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   

20.
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   

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