Quadratic Spline Wavelets with Short Support for Fourth-Order Problems
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In the paper, we propose constructions of new quadratic spline-wavelet bases on the interval and the unit square satisfying homogeneous Dirichlet boundary conditions of the second order. The basis functions have small supports and wavelets have one vanishing moment. We show that stiffness matrices arising from discretization of the biharmonic problem using a constructed wavelet basis have uniformly bounded condition numbers and these condition numbers are very small.
Mathematics Subject Classification46B15 65N12 65T60
KeywordsWavelet Quadratic spline homogeneous Dirichlet boundary conditions condition number biharmonic equation
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