Abstract
The Lagrange interpolation problem on spaces of symmetric bivariate polynomials is considered to reduce the interpolation problem to problems of approximately half dimension. The Berzolari-Radon construction is adapted to these kinds of problems by considering nodes placed on symmetric lines or symmetric pairs of lines. A Newton formula for the symmetric interpolant using the Berzolari-Radon construction is proposed.
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Carnicer, J.M., Godés, C. Interpolation with symmetric polynomials. Numer Algor 74, 1–18 (2017). https://doi.org/10.1007/s11075-016-0135-6
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DOI: https://doi.org/10.1007/s11075-016-0135-6