Geodesic
On the Uniform Approximation of Smooth Functions by Jacobi Polynomials
Canadian journal of mathematics, Tome 25 (1973) no. 1, pp. 216-223

Voir la notice de l'article provenant de la source Cambridge University Press

Let ωn(x) denote the Jacobi polynomials with the weight Function If we denote the corresponding normalized Jacobi polynomials by we Have (1.1) Now let be the nth partial sum of the Fourier series of Jacobi polynomials of a function f(x). 
Prasad, J.; Hayashi, H. On the Uniform Approximation of Smooth Functions by Jacobi Polynomials. Canadian journal of mathematics, Tome 25 (1973) no. 1, pp. 216-223. doi: 10.4153/CJM-1973-020-9
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