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1.
讨论了BCI-代数随半群中元素σ的稳定子S(σ)的 性质,以及S(σ)与Imσ和Kerσ之间的关系。即每个S(σ)是理想当且当X是蕴函代数。  相似文献   

2.
讨论了BCI-代数交换理想的性质,纠正了C.S.Hoo给出的一个错误命题.利用同态映射,给出了BCI-代数固执理想的一个刻画,并举例说明C.S.Hoo的两个结果“I是BCI-代数X的固执理想时,X/I{0,1}且X/I是BCK-代数”与“I是X的固执理想当且仅当I是极大理想和蕴涵理想”是错误的  相似文献   

3.
诣零BIC—代数p—半单部分的特征   总被引:1,自引:0,他引:1  
讨论了诣零BCI-代数p-半单部分SP(X)的元素特征,给出诣零BCI-代数中SP(X)成为理想的两个充要条件,即在诣零代数X=Nk(X)中,SP(X)成为理想当且仅当以下条件之一成立。  相似文献   

4.
根据L.A.Zadeh的模糊集成思路,引入BCI-代数的模糊蕴涵理想和模糊特征蕴涵理想的概念,证明了μ是BCI-代数X的模糊蕴涵理想当且仅当∧A∈[0,1],μt={x∈X,μ(x)≥t}≠φ时,μt是一个蕴涵理论;讨论了模糊蕴涵理想的一系列性质,得到了μ是BCI-代数的模糊特征蕴涵理想当且仅当μt(∧A∈Imμ)是其特征蕴涵理想。  相似文献   

5.
诣零BCI-代数p-半单部分的特征   总被引:1,自引:0,他引:1  
讨论了诣零BCI-代数p-半单部分SP(X)的元素特征,给出诣零BCI-代数中SP(X)成为理想的两个充要条件,即在诣零代数X=Nk(X)中,SP(X)成为理想当且仅当以下条件之一成立:(i)x∈X,u∈SP(X),若x*uk=0,则x=0;(i)x∈P(X),u∈SP(X),若x*uk=0,则x=0.并对其商代数的结合性进行了刻画  相似文献   

6.
关于一类BCI-代数及其伴随半群的性质   总被引:1,自引:0,他引:1  
研究了一类特殊BCI-代数X=P(X)∨SP(X)及其伴随半群,讨论了它的一些性质,得出M(X)=M(P(X))∨M(SP(X)).证明了S是M(X)的真理想的充要条件是S为M(SP(X))的真理想;M(X)是剩余半群的充要条件为M(P(X))是剩余半群.当M(X)是剩余半群时,每一个BCI-代数X=P(X)∨SP(X)均可嵌入到一个BCI-代数X*=P(X*)∨SP(X*)中,且X是X*的子代数  相似文献   

7.
给出了蕴涵BCK-代数的伴随半群作为剩余半群的若干特征,从半群的角度对这类BCK-代数予以刻画,说明其伴随半群M(X)关于剩余运算“∶”作成一个蕴涵BCK-代数,并且M(X)与M(M(X))是同构的  相似文献   

8.
给出了BCI-代数X的p-半单部分SP(X)作成理想的几个充要条件.即SP(X)是X的理想当且仅当如下条件之一成立:a∈SP(X),右乘映射ar是单射;a∈SP(X),ar在P(X)上的限制是单射;X是P(X)与SP(X)的直积  相似文献   

9.
给出了BCI-代数X的p-半单部分SP(X)作成理想的几个充要条件,即SP(X)是X的理想当且仅当如下条件之一成立:A↑α∈SP(X),右乘映射αr是单射;A↑α∈SP(X),αr在P(X)上的限制是单射;X是P(X)与SP(X)的直积。  相似文献   

10.
主要工作:(1)设S是向量空间V上的有限维线性算子空间,SF表示S中全体有限秩序算子,则S是n-代数自反的等价于SF是n-代数自反的;(2)S是Banch空间X上的连续线性算子空间,当S满足一定条件时,S是n-拓扑代数自反的等价于SF是n-拓扑代数自反的。  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.
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   

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.
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   

15.
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.  相似文献   

16.
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   

17.
以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.  相似文献   

18.
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   

19.
Quality traits in wheat (Triticum aestirum L.) were studied by quantitative trait locus (QTL) analysis in a recombinant inbred line (RIL) population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross (ChSh). Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.  相似文献   

20.
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   

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