Abstract
We give compact formulae of the Lagrange interpolation polynomials and cubature formulae based on the common zeros of product Chebyshev polynomials of the second kind. Further, for \(0<p\leq2\), we study the mean convergence of the Lagrange interpolation polynomials.
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We express our gratitude to the referee for helpful suggestions.
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Supported by the Science and Technology Research Project of University of Hebei Province (Grant No. ZC2016066), the Research and Development Program for Science and Technology of Handan (Grant No. 1523103064-6) and the Nursery Engineering of Handan University (Grant No. 2018303).
Laiyi Zhu is supported by the National Natural Scince Foundation of China (Grant No. 11571362).
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Liu, J., Zhu, L.Y. Bivariate Lagrange interpolation based on Chebyshev points of the second kind. Acta Math. Hungar. 159, 618–637 (2019). https://doi.org/10.1007/s10474-019-00988-5
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DOI: https://doi.org/10.1007/s10474-019-00988-5