Orthogonal compactly supported functions in eigenvalue problems (Q1395287)

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scientific article; zbMATH DE number 1940655
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Orthogonal compactly supported functions in eigenvalue problems
scientific article; zbMATH DE number 1940655

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    Orthogonal compactly supported functions in eigenvalue problems (English)
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    1 July 2003
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    The author shows that orthogonal compactly supported piecewise linear functions that are generalizations of B-splines of the first degree are unfit for finite-element methods based on the Lagrange variational principle. A mixed finite-element method based on these functions and the Reissner variational principle is proposed for solving eigenvalue problems. The efficiency of the method is confirmed by accuracy estimates for approximate eigenfunctions and eigenvalues.
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    boundary eigenvalue problems
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    supported functions
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    splines
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    finite-element method
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    variational principle
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    grid equations
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    approximate solution
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