Polynomial interpolation and cubature over polygons |
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| Authors: | M GentileA Sommariva M Vianello |
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| Institution: | Department of Pure and Applied Mathematics, University of Padova, Italy |
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| Abstract: | We have implemented a Matlab code to compute Discrete Extremal Sets (of Fekete and Leja type) on convex or concave polygons, together with the corresponding interpolatory cubature formulas. The method works by QR and LU factorizations of rectangular Vandermonde matrices on Weakly Admissible Meshes (WAMs) of polygons, constructed by polygon quadrangulation. |
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| Keywords: | 65D05 65D32 |
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