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1.
利用半群上的关系f^(*),定义了毕竟C-rpp半群,毕竟C-rpp半群是不同于C-wrpp半群的C-rpp半群的推广,证明了半群S是毕竟C-rpp半群当且仅当S是左消幺半群的强半格的膨胀,并且半群S是毕竟C-rpp半群当且仅当S是C-rpp半群的膨胀。  相似文献   

2.
密码rpp半群是关系H为同余的强rpp半群,这类半群是密码群在rpp半群理论中的推广.该文给出了这类半群的一些新特征.  相似文献   

3.
本文利用 SRLCM-半群,弱左 C-半群,左拟正规带,左 C- rpp半群和右正规带给出了弱左 C- rpp半群的若干特征及其织积结构 .弱左 C- rpp半群是弱左 C-半群和左 C- rpp半群在 rpp半群类的推广 .  相似文献   

4.
引进ρ_R rpp和C-ρ_R rpp半群,指出它们是wrpp和C-wrpp半群的推广.从而将C-rpp半群和C-wrpp半群的若干结果推广到C-ρ_R rpp半群上.  相似文献   

5.
半群S称为左C-rpp半群,如果S是强rpp半群,且满足L(l)是同余且对于任意幂等元e,都有eS∈Se,该文给出了左C-rpp半群的若干特征。  相似文献   

6.
温如凤  满亚丽 《山东科学》2006,19(4):24-25,30
本文定义Ehresmann型rpp半群,它是纯正群并在rpp半群类中的推广,我们给出了此类半群的最小C-rpp半群同余.  相似文献   

7.
完全∮*'~ -单半群是完全单半群在rpp半群中的推广.借助左可消幺半群上的正规Rees矩阵半群,建立了完全∮*,~-单半群的结构.
Abstract:
A complete (∮)*~-simple semigroup is a generalized complete simple semigroup in the range of rpp semigroups. In this paper, a structure theorem for complete(∮)*~-simple semigroups in terms of normalized Rees matrix semigroups over some left cancellative monoids is provided.  相似文献   

8.
在深入研究完全rpp半群和C-wrpp的基础上,定义了完全wrpp半群,得到了完全wrpp半群的一些重要性质,即在完全wrpp半群中定义了一类关系η,证明了关系η是S上的同余,在此基础上,证明了Λ**-关系在商半群S/η中是遗传的。  相似文献   

9.
Ehresmann型rpp半群   总被引:1,自引:0,他引:1  
纯正群并是正则半群类中的一类重要半群.定义了Ehresmann型rpp半群,它是纯正群并在rpp半群类中的推广,并给出了此类半群的若干刻划。  相似文献   

10.
证明了一个半群是一个毕竟强rpp半群的膨胀。胜利这一结论,给出了毕竟PI-强rpp半群的结构定理的一个新证明。  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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