关于有限单群U6（2）

G为有限群,Γ(G)表示G的素图.其顶点集V(GK(G))=π(G)={p p为G的素因子},边集合E(GK(G))={p~q pq∈πe(G),p,q∈V(GK(G))},这里πe(G)表示G的元素的阶的集合.文章得到如下结果 :若Γ(G)=Γ(U6(2)),则G有唯一一个非交换合成因子同构于U6(2)或Hi S.     

关于一些李型单群的ONC-刻画

【目的】为了弱化有限单群数量刻画的数量条件。【方法】用第一ONC-度量ONC_1(G)刻画了李型单群L_2(q)(q=11,13,16,19,23,25,29)。【结果】证明了L_2(q)(q=11,13,19,23,29)可以由ONC_1(G)唯一确定,并给出了在条件ONC_1(G)=ONC_1(L2(q))(q=16,25)下,G的分类。【结论】结果说明不是所有李型单群L_2(q)都可以ONC-刻画。     

非幂零极大子群个数的2个下界

给出非幂零极大子群的2个下界:(1)设G是有限群G的非交换极小正规子群,p是π(N)中最大的素数.令N=R_1×R_2×…×R_l是同构单群的直积,则G至少有p~l个不包含的N非幂零极大子群.(2)设G是有限非可解群,则有G的非幂零极大子群的个数n(G)≥|π(G)|+p,其中p=min{q∈π(G)|G的Sylow q-子群在G中正规}.     

关于黎曼—希尔伯特边值问题的奇异情形

所谓解析函数于多(N 1)连通区域G上的黎曼一希尔伯特边值问题,即求在(?)上连续、在G内解析的函数Φ(z),使其适合边界条件: (1.1) Re[(?)Φ(Z)]=γ(Z),Z_∈Γ,这里Γ是区域G的边界,且Γ_∈C_μ~1(0<μ<1),|λ(Z)|≠0,λ(Z)、γ(Z)_∈C_ν(Γ),1/2<ν<1。而当0≤X=1/2πΔ_Γargλ(z)相似文献   

可积函数L_1(G)到伪测度P(G)的乘子

一、引言以G表示局部紧的交换群,G表示G的对偶群,P(G)是G上的伪测度全体,其中的元素记为σ.T是从L_1(G)到P(G)上的算子.本文以“对一切f,g∈L_1(G)满足T(f*g)=(Tf)*g的算子T~(?)作为从L_1(G)到P(G)的乘子的定义,证明了如下五个条件是等价的: (i)T∈M(L_1(G),P(G)),这里M(L_1(G),P(G))表示乘子全体. (ii)T是线性有界算子,并且Tτ_sf=τ_sTf对一切f∈L_1(G)成立,其中τ_s表示平移算子.     

关於运算子分解的几个问题

§1.引言我們考虑下面几个問題,对于处理某一类非线性积分方程是有益处的(見[1],[6]) (1) 設A是整个L_q(G)到L_p(G)的連續(有界)线性运算子,其中G是n維欧氏空間中Lebesgue可测集合,mG有限或无穷,1相似文献   

2p~2q~2阶二面体群的3度Cayley图

称有限群G的Cayley图Γ是正规Cayley图,如果G的右正则表示R(G)Aut(Γ).该文主要证明了2p2q 2阶二面体群连通3度Cayley图的正规性,其中p>q均为奇素数.作为应用,还证明了Aut(Γ)是可解群.     

三类2q~2p阶群的3度Cayley图

称有限群G的Cayley图Γ是正规Cayley图,如果G的右正则表示R(G)正规于图Γ的全自同构群Aut(Γ)。研究了三类2q2p阶亚循环群的连通3度Cayley图的正规性,其中qp均为奇素数,且q(p-1)。作为应用,决定了其中两类亚循环群的弱3-CI性。值得一提的是,在此用到单群分类定理。     

二阶非线性椭园型复方程的“黎曼—希尔伯特问题”

§1.引言本文讨论复平面上二阶非线性一致椭园型复方程:于N 1连通区域上的黎曼——希尔伯特边值问题。我们用G表示z平面上的N 1连通区域,其边界Γ∈C~2_μ0<μ<1;不失一般性,可以认为G是单位园|z|<|内的N 1连通园界区域,其边界Γ是N 1个园周Γj:|z-zj|=rj,j=0,1,…,N,Γ_0:|z|=1,z=0∈G。下面均设方程(1.1)在区域G上满足条件C:     

关于有限内循环群边传递的图

所指的图是有限的、单的、无向的且无孤立点,p,q,t是素数,m,r是正整数且满足r■1≡rq(modp).获得了关于有限内循环群边传递的图的完全分类,结果为:设Γ是一个图,G是一个阶为pqm或t2或8的内循环群,且G≤Aut(Γ),则Γ是G-边传递的当且仅当Γ同构于下列图之一:(1)qm-eCpqe,0≤e1;(4)pCqm,(q,m)≠(2,1);(5)pK1,1,m=1;(6)Cay(Zp,C),C={±rμ|μ∈Zq},m=1;(7)B(Zp,C),其中C={1-rj|j∈Zq},m=1;(8)Kp,1,m=1;(9)pKqm,1;(10)Kpqm,1;(11)Kqm,p;(12)pqeK1,qm-e,1≤e≤m;(13)qeK1,pqm-e,1≤e≤m;(14)qeKqm-e,p,1≤e2;(16)2K1,1,t=2;(17)t2K1,1;(18)tKt,1;(19)Kt,t;(20)Kt2,1;(21)2C4;(22)8K1,1;(23)2K4,1;(24)4K2,1;(25)K8,1.     

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.     

Lower Paleozoic oil relationships within Williston Basin, Canada

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

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.     

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.     

Design and analysis of generic LBS application developing platform

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

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.     

A computer generator for randomly layered structures

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

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

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.     

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.