共查询到20条相似文献,搜索用时 62 毫秒
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OnRationalBasesofSubspacesofF((D))~nWanZhexian(万哲先)(InstituteofSystemsScience,ChineseAcademyofSciences,Beijing,100080andDepar?.. 相似文献
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(g,f)-factorswithSpecialPropertiesin(mg,mf)-graphsSunZheng(孙铮)(DepartmentofMathematics,ShandongUniversity,Jinan,Shandong,2501... 相似文献
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Guo Yuanchun 《东北数学》1995,(3)
AClassofRingsSatisfyingS~m=S~(m+1)onSubrings¥(郭元春)GuoYuanchun(DepartmentofMathematics,JilinUniversity,Changchm,130023)Abstract... 相似文献
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SocaltheBerlinskitheoremforplanarquadraticSystem(QS)is:TheoremA[1]SupposethataQShas4finitecriticalpoints(CPs),Ifthequadrila... 相似文献
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Hao Zhifeng 《数学季刊》1998,(3)
§1. IntroductionThepurposeofthispaperistocomputetheGrothendieckgroupofT=RMNS(θ,φ).TiscalledtheringofMoritaContextinsomeliterature(see[1]).In1974,QuillenannoucedthatK0(RMOS)K0(R)K0(S).UptothepresentmomenttherestillexistsnoinformationconcerningK0(T)f… 相似文献
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ARemarkonNon┐uniformEstimatesAboutSumofIndependentRandomVariables*)ChengPing(成平)(InstituteofSystemsScience,AcademiaSinica,Bei... 相似文献
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TheEssentialSpectrumofToeplitzOperatorsonStronglyPseudoconvexDomainsGuoKunyu(郭坤宇)(SichuanUniversity,Chengdu,Sichuan,610064)Co... 相似文献
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Density,SpreadandCharacterofSpacesofBorel SubsetsYangXu(杨旭)(DepertmentofMathematics,SipingNormalCollege,Siping,136000)CaoYe(曹... 相似文献
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Mohammad Zubair Khan 《Proceedings Mathematical Sciences》1978,87(9):177-179
It is proved that a high subgroup of a large subgroup is closed in a high subgroup of the group itself. Also a necessary and
sufficient condition for a subgroup to be a pureabsolute summand is obtained. 相似文献
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设f(z)为单位圆上的规范化的单叶凸像函数,L(H)为复Hilbert空间H上的Banach算子代数。本文证明了对于L(H)中双重可换的真收缩算子Tt(i=1,2),f(T1)与f(T2)的凸线性组合一定具有形式f(T),此处T为L(H)中的真收缩算子,同时我们通过一简单例子说明“Tt双重可换”的条件是不能去掉的,这便回答了由KyFan提出的一个问题。 相似文献
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Li Xianhua 《东北数学》1994,(1)
On[m,P_1~(a_1),P_2~(a_2),…,P_s~(a_s)]IndexTypeGroupsLiXianhua(黎先华)(DepartmentofMathematics,GuizhouNormalUniversity,Guiyang,550001)A... 相似文献
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The objective of this paper is to invertigate the influence of maximal subgroups on the structure of a finite group.We introduce a concept of "normality" based on the permuting of certain subgroups.This concept leads to a generalization of Asaad and Shaalan's result. 相似文献
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We call a subgroup A of a finite group G a solitary subgroup of G if G does not contain another isomorphic copy of A. We call a normal subgroup A of a finite group G a normal solitary subgroup of G if G does not contain another normal isomorphic copy of A. The property of being (normal) solitary can be viewed as a strengthening of the requirement that A is normal in G. We derive various results on the existence of (normal) solitary subgroups. 相似文献