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“F”与“V”类积分方程“解”的唯一性的论证
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作者 孙昌安 吴松年 《彭城职业大学学报》 2000年第1期79-86,共8页
本文基于“F”与“V”类积分方程式的基本形式,抽象出积分方程式“核”的基本定义,它论证了积分“核”的胡瑞的合门(fredlholm)定理与“F”,“V”定积分方程式解存在唯一性的重要定理,并举例应用了积分方程式的解法。
关键词 唯一性 积分“核” “F”类积分方程式 “V”类积分方程式 胡瑞 合门定理
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Weighted L^p-boundedness of Multilinear Oscillatory Singular Integrals with Calderón-Zygmund Kernel
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作者 田东风 燕敦验 《Chinese Quarterly Journal of Mathematics》 CSCD 2002年第1期33-40,共8页
In this paper, weighted L p-boundedness is obtained for a class of multilinear oscillatory singular integrals with Calderón-Zygmund kernel.
关键词 multilinear oscillatory integrals Calderón-Zygmund kernel A p-weight
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A large-range convergence iterative method for solving a nonlinear functional equation
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作者 母丽华 沈继红 杜红 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2008年第5期631-634,共4页
The existence and representation of the exact solution are given for a nonlinear functional equation in the reproducing kernel space. For a numerical computation, we present a large-range convergence iterative method ... The existence and representation of the exact solution are given for a nonlinear functional equation in the reproducing kernel space. For a numerical computation, we present a large-range convergence iterative method for solving the nonlinear functional equation. In the iterative method, the convergent condition is simple and the convergence is irrespective to the choice of the initial function. It is worthy to note that the presented method can be generalized to solve other nonlinear operator equations. 展开更多
关键词 nonlinear functional equation nonlinear Voherra integral equation reproducing kernel
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Numerical Minimum Time Control to a Class of Singular Integro-Differential Equations
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作者 Shihchung Chiang 《Journal of Mathematics and System Science》 2015年第2期72-82,共11页
This study presents a numerical method for determining the minimum time required for the states of one class of integro-differential equations of the first kind to reach its attainable region by assuming the forcing t... This study presents a numerical method for determining the minimum time required for the states of one class of integro-differential equations of the first kind to reach its attainable region by assuming the forcing terms of the equations as controls. These equations consist of integro-differential parts containing weakly singular kernels. The feasibility of the numerical method is demonstrated by comparing the minimum time and corresponding possible time by using extreme controls to reach the attainable region under different initial conditions. 展开更多
关键词 Integro-differential equations weakly singular kernels minimum time control
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桔皮油中与发泡聚苯乙烯塑料相溶组分的分析 被引量:4
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作者 张秋芬 胡治元 张秀华 《洛阳工业高等专科学校学报》 2003年第2期4-4,54,共2页
气相色谱法测定结果表明:桔皮提取物中有一绝对优势组分。通过红外光谱和核磁共振进一步协同确定,与聚苯乙烯具有良好相溶性的组分是(d)-柠烯,即d-limonene。
关键词 桔皮油 发泡聚苯乙烯塑料 相溶性 气相色谱法 红外光谱 磁共振 (d)-柠烯 d-1imonene 废物处理 生物降解
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Integral Representation of the Manifold Solution for New Class of the Volterra Type Integral Equation with a Boundary Singularity in the Case, When Kernel Contain Logarithmic Singularity and its Power
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作者 Nusrat Rajabov 《Journal of Mathematics and System Science》 2016年第1期23-37,共15页
In this work we suggestion new methods investigation the model Volterra type integral equation with logarithmic singularity, kernel which consisting from composition polynomial function with logarithmic singularity an... In this work we suggestion new methods investigation the model Volterra type integral equation with logarithmic singularity, kernel which consisting from composition polynomial function with logarithmic singularity and function with singular point. The problem investigation this type integral equation at n = 2m reduce to problem investigate the Volterra type integral equation (1) for n = 2 the theory for which was constructed in [2]. In this work, we investigation integral equation (1) at = 2m + 1 In this case, we investigate integral equation (1) reduction it's to m integral equation type [2] φ(x)+∫xa[p1+p2 ln(x-a/t-a)]φ(t)/t-a dt=f(x)and one the following integral equation [1] ω(x)+p3∫xω(t)/ a t-adt=g(x). 展开更多
关键词 singular kernel volterra type integral equation boundary singularity logarithmic singularity.
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The boundedness for commutators of maximal hypersingular integrals with rough kernels 被引量:1
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作者 CHEN YanPing DING Yong LI Ran 《Science China Mathematics》 SCIE 2013年第4期707-728,共22页
In this paper,we prove that the commutators of maximal hypersingular integrals with rough kernels are bounded from the Sobolev space Lpγ(Rn) to the Lebesgue space Lp(Rn),which is a substantial improvement and an exte... In this paper,we prove that the commutators of maximal hypersingular integrals with rough kernels are bounded from the Sobolev space Lpγ(Rn) to the Lebesgue space Lp(Rn),which is a substantial improvement and an extension of some known results. 展开更多
关键词 COMMUTATOR maximal hypersingular integrals rough kernel BMO sobolev space
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A Class of Oscillatory Singular Integrals
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作者 勒孚龙 胡国恩 《Journal of Mathematical Research and Exposition》 CSCD 1999年第1期18-24,共7页
LP mapping properties are considered for a class of oscillatory signular integral operators.Ketwords:Calderon-Zygmund kernel. oscillatory singular integral operator. polynomial growth estimate.
关键词 Calder n-Zyhmund kernel oscillatory singular integral operator polynomial growth estimate
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Liouville theorems for an integral system with Poisson kernel on the upper half space 被引量:1
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作者 DOU Jing Bo ZHANG Xiang 《Science China Mathematics》 SCIE CSCD 2016年第7期1367-1382,共16页
We investigate the Liouville theorem for an integral system with Poisson kernel on the upper half space R+n,{u(x) =2/(nωn)∫?R+n(xnf(v(y)))/(|x- y|n)dy, x ∈R+n,v(y) =2/(nωn)∫R+n(xng(u(x)))/(... We investigate the Liouville theorem for an integral system with Poisson kernel on the upper half space R+n,{u(x) =2/(nωn)∫?R+n(xnf(v(y)))/(|x- y|n)dy, x ∈R+n,v(y) =2/(nωn)∫R+n(xng(u(x)))/(|x- y|n)dx, y ∈?R+n,where n 3, ωn is the volume of the unit ball in Rn. This integral system arises from the Euler-Lagrange equation corresponding to an integral inequality on the upper half space established by Hang et al.(2008).With natural structure conditions on f and g, we classify the positive solutions of the above system based on the method of moving spheres in integral form and the inequality mentioned above. 展开更多
关键词 Poisson kernel method of moving spheres regularity Kelvin transformation Liouville theorem
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Formation and strain distribution of Ni/NiO core/shell magnetic nanoparticles fabricated by pulsed laser deposition 被引量:4
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作者 YUAN CaiLei ZHANG QiuLong +1 位作者 LUOXingFang ZHANG ZhenRong 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2011年第7期1254-1257,共4页
Nucleation and growth lead to substantial strain in nanoparticles embedded in a host matrix. The distribution of strain field plays an important role in the physical properties of nanoparticles. Magnetic Ni/NiO core/s... Nucleation and growth lead to substantial strain in nanoparticles embedded in a host matrix. The distribution of strain field plays an important role in the physical properties of nanoparticles. Magnetic Ni/NiO core/shell nanoparticles embedded in the amorphous Al2O3 matrix were fabricated by pulsed laser deposition. The results from a high-resolution transmission electron microscope also revealed that the core/shell nanoparticles consist of a single crystal Ni core with a faced-centered cubic struc- ture (Space Group FM-3M) and polycrystalline Nit shell with a trigonal/rhombohedral structure (Space Group R-3mH). The growth strain of Ni/NiO core/shell nanoparticles embedded in the Al2O3 matrix was investigated. Finite element calculations clearly indicate that the Nit shell incurs large compressive strain. The compressive strain existing at the Nit shell area ena- bles the shell material at the interface to adapt to the lattice parameters of Ni core. This process results in a relatively good crystallinity near the interface, which may be associated with the higher exchange coupling between the ferromagnetic Ni core and antiferromagnetic Nit shell. 展开更多
关键词 magnetic nanoparticles STRAIN transmission electron microscope
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L^p Estimates for Singular Radon Transforms with Rough Kernels
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作者 Zhenqiu ZHANG Meifang CHENG 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2008年第2期155-164,共10页
The purpose of this paper is to study the mapping properties of the singular Radon transforms with rough kernels. Such singular integral operators are proved to be bounded on Lebesgue spaces.
关键词 Singular Radon transform Rough kernel Dyadic decomposition
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A Jacobi-collocation method for solving second kind Fredholm integral equations with weakly singular kernels
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作者 CAI Hao Tao 《Science China Mathematics》 SCIE 2014年第10期2163-2178,共16页
In this work,we propose a Jacobi-collocation method to solve the second kind linear Fredholm integral equations with weakly singular kernels.Particularly,we consider the case when the underlying solutions are sufficie... In this work,we propose a Jacobi-collocation method to solve the second kind linear Fredholm integral equations with weakly singular kernels.Particularly,we consider the case when the underlying solutions are sufficiently smooth.In this case,the proposed method leads to a fully discrete linear system.We show that the fully discrete integral operator is stable in both infinite and weighted square norms.Furthermore,we establish that the approximate solution arrives at an optimal convergence order under the two norms.Finally,we give some numerical examples,which confirm the theoretical prediction of the exponential rate of convergence. 展开更多
关键词 second kind Fredholm integral equations with weakly singular kernels Jacobi-collocation methods stability analysis convergence analysis
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Weighted estimates for the multilinear singular integral operators with non-smooth kernels 被引量:7
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作者 HU GuoEn1 & LU ShanZhen2 1Department of Applied Mathematics, Zhengzhou Information Science and Technology Institute, Zhengzhou 450002, China 2Department of Mathematics, Beijing Normal University, Beijing 100875, China 《Science China Mathematics》 SCIE 2011年第3期587-602,共16页
In this paper, by sharp function estimates and certain weak type endpoint estimates, the authors establish some weighted norm inequalities with Ap weights for the multilinear singular integral operators with non-smoot... In this paper, by sharp function estimates and certain weak type endpoint estimates, the authors establish some weighted norm inequalities with Ap weights for the multilinear singular integral operators with non-smooth kernels. 展开更多
关键词 approximation to the identity weighted norm inequality singular integral operator non-smooth kernel Calderón-Zygmund decomposition
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