共查询到20条相似文献,搜索用时 156 毫秒
1.
OSCILLATORY BEHAVIOR OF HIGHER ORDER NONLINEAR NEUTRAL FUNCTIONAL DIFFERENTIAL EQUATION 总被引:1,自引:0,他引:1
OSCILLATORYBEHAVIOROFHIGHERORDERNONLINEARNEUTRALFUNCTIONALDIFFERENTIALEQUATIONFengYuecai(冯月才)(SouthChinaNormalUniversity)Abst... 相似文献
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利用零化子的技巧,完全刻划了套代数中根R、r的ω*闭包,得到R^W*r=H=(Rr∩K(K)**,其中R^W*r为Rr的W*闭包,K={T∈R(K):P(N-)TP(N)=0,A↓N∈N};并且作为零化子和R^W*刻划的应用,给出了Rr中类Erdos稠密性定理的一个新的证明和距离公式。 相似文献
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ON THE HEAT KERNEL OF THE RIEMANNIAN SYMMETRIC SPACE SU(6)/SP(3) 总被引:1,自引:1,他引:0
朱赋鎏 《数学物理学报(B辑英文版)》1995,(3)
ONTHEHEATKERNELOFTHERIEMANNIANSYMMETRICSPACESU(6)/SP(3)ZhuFuliu(DepartmentofMathematics.WuhanUniversity,Wuhan430072,China.)Ab... 相似文献
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SYMPLECTIC SCHEMES FOR NONAUTONOMOUS HAMILTONIAN SYSTEM 总被引:3,自引:0,他引:3
秦孟兆 《应用数学学报(英文版)》1996,12(3):284-288
SYMPLECTICSCHEMESFORNONAUTONOMOUS HAMILTONIAN SYSTEMQINMENGZHAO(秦孟兆)(InstitateofComputationalMathematicsandScientific-Enginee... 相似文献
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ONEXCHANGEALGORITHMFORNONLINEARBESTCHEBYSHEVAPPROXIMATIONWITH LGHCONDITIONXiongGuijing(熊规景);WeiDan(韦旦)(Inst.ofMath.Sci.,Chin.... 相似文献
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ASYMPTOTICCHARACTERISTICANDOSCILLATIONOFHIGHORDERNEUTRALFUNCTIONALDIFFERENTIALEQUATION¥WenXiangcai(温香彩)(HenanNormalUniversity... 相似文献
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《高校应用数学学报(英文版)》1997,(1)
ONSEMILINEARELLIPTICEQUATIONSWITHSUBLINEARANDSUPERLINEARNONLINEARITIESINRNYANGHAITAOANDWUSHAOPINGAbstract.Theexistenceofinfi... 相似文献
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HANKELOPERATORSANDHANKELALGEBRASYANSHAOZONGCHENXIAOMANGUOKUNYUManuscriptreceivedJune23,1995.InstituteofMathematics,Fuda... 相似文献
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单纯形上Bernstein多项式的迭代极限陈发来(中国科学技术大学数学系,合肥230026)LIMITOFITERATESFORBERNSTEINPOLYNOMIALSDEFINEDONASIMPLEX¥CHENFALAI(DepartmentofM... 相似文献
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韦旦 《数学物理学报(B辑英文版)》1994,(2)
ONSOMERESULTSFORNONLINEARBESTCHEBYSHEVAPPROXIMATIONWITHLGHCONDITIONWeiDan(韦旦)(Inst.ofMath.Sci.,ChineseAcademyofSciences,Wuhan... 相似文献
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DONG Zhe 《数学年刊B辑(英文版)》2003,24(3):323-330
This paper studies the tensor product RN RM of Jacobson radicals in nest algebras, and obtains that RN RM = {T∈B(H1 H2) : T(N M)(?)N_ M_, N∈N,M∈M}; and based on the characterization of rank-one operators in RN RM,it is proved that if N, M are non-trivial then RN RM=R if and only if N, M are continuous. 相似文献
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Let XH = {XH(s),s ∈RN1} and X K = {XK(t),t ∈R N2} be two independent anisotropic Gaussian random fields with values in R d with indices H =(H1,...,HN1) ∈(0,1)N1,K =(K1,...,KN2) ∈(0,1) N2,respectively.Existence of intersections of the sample paths of X H and X K is studied.More generally,let E1■RN1,E2■RN2 and FRd be Borel sets.A necessary condition and a sufficient condition for P{(XH(E1)∩XK(E2))∩F≠Ф}>0 in terms of the Bessel-Riesz type capacity and Hausdorff measure of E1×E2×F in the metric space(RN1+N2+d,) are proved,where is a metric defined in terms of H and K.These results are applicable to solutions of stochastic heat equations driven by space-time Gaussian noise and fractional Brownian sheets. 相似文献
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Nest代数上的在零点广义可导映射 总被引:4,自引:0,他引:4
设A为B(H)的子代数, 是A到B(H)的线性映射,我们说 在0点广义可导(广义双边可导),如果对任意的S,T∈A且ST=0(ST=0或TS=0),有 (ST)= (S)T+S (T)-S (I)T.本文主要得到如下结果:(1)有限Nest代数上的每个范数拓扑连续的在0点广义可导的线性映射是广义内导子;(2)若N是完备Nest且H_ H,则algN上的每个范数拓扑连续的在0点广义双边可导的线性映射是广义内导子. 相似文献
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Let H be a finite-dimensional pointed Hopf algebra of rank one over an algebraically closed field of characteristic zero.In this paper we show that any finite-dimensional indecomposable H-module is generated by one element.In particular,any indecomposable submodule of H under the adjoint action is generated by a special element of H.Using this result,we show that the Hopf algebra H is a principal ideal ring,i.e.,any two-sided ideal of H is generated by one element.As an application,we give explicitly the generators of ideals,primitive ideals,maximal ideals and completely prime ideals of the Taft algebras. 相似文献
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设a为nest代数,R^∞为A的Larson理想,R(A)为A的根,[R(A)]^s为R(A)的强拓扑闭。在文本中,我们给出[R(A)]^s的纯代数构造;且引进了一个新算子集合I,并证明了:若A的不变子空间格为几乎原子的,则R^∞=[R(A)]^s=I。利用上述结果,我们研究了当A的不变子空间格为几乎原子时的Larson理想中的算子插值问题。我们得到算子方程AX=Y在R^∞中有解A的充分必要条件。 相似文献
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研究了循环环R=的理想、素理想和极大理想的个数和结构,得到了如下结论:1)理想:(1)若|R|=∞,则R共有无穷多个理想:;(2)若|R|=n,设n的正因数个数为T(n),则R共有T(n)个理想:.2)素理想:(1)若|R|=∞,设a^2=ka(k≥0),①当k=0时,R的素理想只有R;②当k>0时,R的素理想共有无穷多个,它们是:{0}、R及;(2)若|R|=n>1,设a^2=ka,0≤k.3)极大理想:(1)若|R|=∞,则R有无限多个极大理想,它们是;(2)若|R|=n>1,设n的互不相同的素因数个数为ψ(n),则R共有ψ(n)个极大理想:(pa|p是n的素因数). 相似文献
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设H为复的可分无限维Hilbert空间,称有界线性算子T为强不可约的,如果与T可交换的幂等算子只有0和I.王宗尧、蒋春澜、纪有清等人证明了在任何一个套的套代数中都存在大量的强不可约算子,并且找到了它们的酉轨道闭包.本文考虑有限个套的张量积的代数中强不可约算子的存在性问题。证明了:对复平面上任何一个连通完备集σ、总存在一个对角算子N和它的一个范数可以任意小的紧摄动T=X+K,使得T是一个强不可约算子、T在有限个良序套的张量积的代数中,并且σ(T)=σlre(T)=σ(N)=σlre(N)=σ进一步,文章还对具有单点谱的算子和良序套与正交补为良序套的张量积的代数进行了讨论,得到了一些结果. 相似文献