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再生核空间二元函数展开
引用本文:吴勃英. 再生核空间二元函数展开[J]. 东北数学, 2000, 16(3): 362-366
作者姓名:吴勃英
作者单位:DepartmentofMathematics,HarbinInstituteofTechnology,Harbin,150001)
基金项目:The NSF (19971020) of China.
摘    要:For convenience, we use D to denote [0,1]×[0,1]. PutH2={u(x,y)|u∈L2(D) is a real and totally continuous function withux, uy, 2ux2, 2uy2, 2uxy, 3uxy2, 3ux2y, 4ux2y2∈L2(D)} For any u and v∈H2, we define an inner product〈u,v〉=Duv+2uxvx+2uyvy+42uxy2vxy+2ux22vx2+2uy22vy2+23ux2y3vx2y+23uxy23vxy2+4ux2y24vx2y2dxdy.(1)Selecting a norm as ‖·‖=〈·,·〉1/2, we find that, as the proof in [1], H2 is a reproducing kernel space (see [2]), and (1) defines indeed an inner product on the …

关 键 词:未知量  展开定理  再生核空间  连续逼近  偏微分函数  内插函数

The Expansion of the Function with Two Unknowns on the Reproducing Kernel Space
WU Bo-ying. The Expansion of the Function with Two Unknowns on the Reproducing Kernel Space[J]. Northeastern Mathematical Journal, 2000, 16(3): 362-366
Authors:WU Bo-ying
Abstract:In this paper we make use of a special procedure on the reproducing kernel space to give an expansion theorem for the function with two unknowns and a surface approximation formula. The error of the surface possesses monotonically decreasing and uniformly convergent characteristics in the sense of the norm on the space.
Keywords:reproducing kernel space   function with two unknowns   expansion theorem
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