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ON L^p-MATRICIALLY NORMED SPACES 被引量:1
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作者 T.别克 《Acta Mathematica Scientia》 SCIE CSCD 2005年第4期681-686,共6页
It is proved that there is only one L^P-matricially normed space of dimension 1 and that quotient spaces of L^P-matricially normed spaces are also L^P-matricially normed spaces. Some properties of L^P-matricially norm... It is proved that there is only one L^P-matricially normed space of dimension 1 and that quotient spaces of L^P-matricially normed spaces are also L^P-matricially normed spaces. Some properties of L^P-matricially normed spaces are given. 展开更多
关键词 Matrix norm Lp-matricially normed space completely bounded operator
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A NEW ROPER-SUFFRIDGE EXTENSION OPERATOR ON BOUNDED COMPLETE REINHARDT DOMAINS 被引量:2
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作者 刘浩 夏红川 《Acta Mathematica Scientia》 SCIE CSCD 2014年第6期1835-1844,共10页
In this paper, we construct a new Roper-Suffridge extension operator Φn^r,β1,,βn(f)(z) = F(z) = ((rf(z1/r)/z1)^β1z1,(rf(z1/r)/z1)^β2z2,...,(rf(z1/r)/z1)^βnzn)',where f is a normalized locall... In this paper, we construct a new Roper-Suffridge extension operator Φn^r,β1,,βn(f)(z) = F(z) = ((rf(z1/r)/z1)^β1z1,(rf(z1/r)/z1)^β2z2,...,(rf(z1/r)/z1)^βnzn)',where f is a normalized locally biholomorphic function on the unit disc D, r = sup{|z1| : z =(z1, ···, zn) ∈Ω}, β1∈ [0, 1], 0 ≤βk≤β1, k = 2, ···, n, then we prove it can preserve the property of spirallikeness of type β, almost starlikeness of order α and starlikeness of orderα on bounded complete Reinhardt domain Ω, respectively. 展开更多
关键词 Roper-Suffridge operator biholomorphic mappings bounded complete Reinhardt domains
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FIXED POINTS FOR WEAKLY INWARD MAPPINGS IN BANACH SPACES (Ⅱ)
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作者 Shaoyuan Xu Wangbin Xu Guanghui Zhou 《Analysis in Theory and Applications》 2010年第4期308-319,共12页
S. Hu and Y. Sun[1] defined the fixed point index for weakly inward mappings, investigated its properties and studied fixed points for such mappings. In this paper, following S. Hu and Y. Sun, we further investigate b... S. Hu and Y. Sun[1] defined the fixed point index for weakly inward mappings, investigated its properties and studied fixed points for such mappings. In this paper, following S. Hu and Y. Sun, we further investigate boundary conditions, under which the fixed point index for i(A, Ω, p) is equal to nonzero, where i(A, Ω, p) is the completely continuous and weakly inward mapping. Correspondingly, we can obtain many new fixed point theorems of the completely continuous and weakly inward mapping, which generalize some famous theorems such as Rothe's theorem, Altman's theorem, Petryshyn's theorem etc. in the case of weakly inward mappings. In addition, our conclusions extend the famous fixed point theorem of cone expansion and compression to the case of weakly inward mappings. Moreover, the main results contain and generalize the corresponding results in the recent work[2]. 展开更多
关键词 fixed point and fixed point index weakly inward mapping completely contin-uous operator real Banach space cone
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NEW FIXED POINT THEOREMS FOR P_1-COMPACT MAPPINGS IN BANACH SPACES
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作者 Shaoyuan Xu 《Analysis in Theory and Applications》 2007年第3期274-282,共9页
E E. Browder and W. V. Petryshyn defined the topological degree for A- proper mappings and then W. V. Petryshyn studied a class of A-proper mappings, namely, P1-compact mappings and obtained a number of important fixe... E E. Browder and W. V. Petryshyn defined the topological degree for A- proper mappings and then W. V. Petryshyn studied a class of A-proper mappings, namely, P1-compact mappings and obtained a number of important fixed point theorems by virtue of the topological degree theory. In this paper, following W. V. Petryshyn, we continue to study P1-compact mappings and investigate the boundary condition, under which many new fixed point theorems of P1-compact mappings are obtained. On the other hand, this class of A-proper mappings with the boundedness property includes completely continuous operators and so, certain interesting new fixed point theorems for completely continuous operators are obtained immediately. As a result of it, our results generalize several famous theorems such as Leray-Schauder's theorem, Rothe's theorem, Altman's theorem, Petryshyn's theorem, etc. 展开更多
关键词 A-proper mapping P1-compact mapping completely continuous operator topological degree fixed point theorem
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Space of Operators and Property (MB)
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作者 Manijeh Esfahani Bahreini 《Advances in Pure Mathematics》 2016年第13期948-953,共6页
In this paper, a new class of Banach spaces, termed as Banach spaces with property (MB), will be introduced. It is stated that a space X has property (MB) if every V -subset of X* is an L-subset of X* . We describe th... In this paper, a new class of Banach spaces, termed as Banach spaces with property (MB), will be introduced. It is stated that a space X has property (MB) if every V -subset of X* is an L-subset of X* . We describe those spaces which have property (MB) . Also, we show that if a Banach space X has property (MB) and Banach space Y does not contain , then every operator is completely continuous. 展开更多
关键词 L-Sets V -Sets Completely Continuous Operators Unconditionally Converging Operators
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The order-preserving convergence for spectral approximation of self-adjoint completely continuous operators 被引量:9
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作者 YANG YiDu CHEN Zhen 《Science China Mathematics》 SCIE 2008年第7期1232-1242,共11页
This paper discusses the order-preserving convergence for spectral approximation of the self-adjoint completely continuous operator T.Under the condition that the approximate operator Th converges to T in norm,it is p... This paper discusses the order-preserving convergence for spectral approximation of the self-adjoint completely continuous operator T.Under the condition that the approximate operator Th converges to T in norm,it is proven that the k-th eigenvalue of Th converges to the k-th eigenvalue of T.(We sorted the positive eigenvalues in decreasing order and negative eigenvalues in increasing order.) Then we apply this result to conforming elements,nonconforming elements and mixed elements of self-adjoint elliptic differential operators eigenvalue problems,and prove that the k-th approximate eigenvalue obtained by these methods converges to the k-th exact eigenvalue. 展开更多
关键词 self-adjoint completely continuous operator spectral approximation the order-preserving convergence 65N25 65N30 35P15 65N15
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EXISTENCE AND UNIQUENESS OF POSITIVE SOLUTIONS TO A SYSTEM OF NONLINEAR FRACTIONAL DIFFERENTIAL EQUATIONS WITH DELAY 被引量:2
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作者 Xiaofei Wu Xidong Sun 《Annals of Differential Equations》 2014年第3期340-351,共12页
Using a fixed point method, in this paper we discuss the existence and uniqueness of positive solutions to a class system of nonlinear fractional differential equations with delay and obtain some new results.
关键词 Riemann-Liouville fractional derivative and integral completely continuous operator positive solution fixed point
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Prototype of a large neutron detector based on MWPC 被引量:1
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作者 TIAN LiChao QI HuiRong +11 位作者 SUN ZhiJia WANG YanFeng ZHANG Jian LIU RongGuang ZHAO YuBin ZHANG HongYu ZHAO DongXu DONG Jing XIE Wan YANG GuiAn OUYANG Qun CHEN YuanBo 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2014年第11期2049-2053,共5页
A prototype of large-area position sensitive neutron detector was designed and constructed according to the requirements of the Small-Angle Scattering spectrometer of China Spallation Neutron Source(CSNS).The detector... A prototype of large-area position sensitive neutron detector was designed and constructed according to the requirements of the Small-Angle Scattering spectrometer of China Spallation Neutron Source(CSNS).The detector was based on the 3He neutron convertor and MWPC with an effective area of 650 mm×650 mm.A prototype was completed and tested with 55Fe X-ray.The high-pressure vessel was designed and constructed with high-strength aluminum alloy.A position resolution of about 4.6mm×2.3 mm(FWHM)and efficiency>65%for neutrons with wavelength of 1.8?was determined after the operational gas filled. 展开更多
关键词 neutron prototype operational spectrometer completed readout proton filled chamber FWHM
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EXISTENCE OF NON-TRIVIAL SOLUTION FOR SUPERLINEAR SYSTEM OF INTEGRAL EQUATIONS AND ITS APPLICATIONS 被引量:10
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作者 张志涛 《Acta Mathematicae Applicatae Sinica》 SCIE CSCD 1999年第2期153-162,共10页
In this paper, we use cone theory and topological degree theory to study superlinear systemof integral equations, and obtain existence theorems for non-trivial solutions; moreover, we applythe results to two-point bo... In this paper, we use cone theory and topological degree theory to study superlinear systemof integral equations, and obtain existence theorems for non-trivial solutions; moreover, we applythe results to two-point boundary problems of ordinary differential system of equations. 展开更多
关键词 CONE topological degree theory completely continuous operators superlinear system of equations non-trivial solution.
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BOUNDARY VALUE PROBLEM TO DYNAMIC EQUATION ON TIME SCALE
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作者 Jinying Song,Fengjie Geng (School of Information Engineering,China University of Geoscience,Beijing 100083) 《Annals of Differential Equations》 2011年第3期367-371,共5页
In this paper we consider a nonlinear first-order boundary value problem on a time scale. The existence results of three positive solutions are obtained using fixed point theorems. Finally,examples are presented to il... In this paper we consider a nonlinear first-order boundary value problem on a time scale. The existence results of three positive solutions are obtained using fixed point theorems. Finally,examples are presented to illustrate the main results. 展开更多
关键词 time scale boundary value problem fixed point completely continuous operator
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