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LOW-RANK TENSOR STRUCTURE OF SOLUTIONS TO ELLIPTIC PROBLEMS WITH JUMPING COEFFICIENTS
《Journal of Computational Mathematics》2012年第1期14-23,共10页Sergey Dolgov Boris N.Khoromskij Ivan Oseledets Eugene E.Tyrtyshnikov 
We study the separability properties of solutions to elliptic equations with piecewise constant coefficients in Rd, d ≥ 2. The separation rank of the solution to diffusion equation with variable coefficients is prese...
关键词：Structured matrices Elliptic operators Poisson equation Matrix approxima-tions Lowrank matrices TENSORS Canonical decomposition. 
ON COEFFICIENT POLYNOMIALS OF CUBIC HERMITE-PADé APPROXIMATIONS TO THE EXPONENTIAL FUNCTION
《Journal of Computational Mathematics》2005年第4期383-392,共10页Cheng-de Zheng Guo-can Wang Zhi-bin Li 
The polynomials related with cubic Hermite-Padé approximation to the exponential function are investigated which have degrees at most n, m, s respectively. A connection is given between the coefficients of each of th...
关键词：Padé-type approximant Cubic Hermite-Padé approximation Hypergeometric function Saddle point method 
NUMERICAL DISSIPATION FOR THREE-POINT DIFFERENCE SCHEMES TO HYPERBOLIC EQUATIONS WITH UNEVEN MESHES
《Journal of Computational Mathematics》2003年第4期519-534,共16页Zi-niu Wu(Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China) 
This work was supported by China NKBRSF Project(2001CB409600)and by China National Natural Science Foundations(10025210)
The widely used locally adaptive Cartesian grid methods involve a series of abruptly refined interfaces. The numerical dissipation due to these interfaces is studied here for three-point difference approximations of a...
关键词：Refined interfaces Numerical dissipation Three-point difference approxima-tion Hyperbolic equation. 
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