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Introduction to spectral methods - obspm.fr
Periodic problem : `n = trigonometric polynomials (Fourier series) Non-periodic problem : `n = orthogonal polynomials. 12 2 Legendre and Chebyshev expansions. 13 Legendre and Chebyshev polynomials [from Fornberg (1998)] ... Case where the trial functions are orthogonal polynomials `n in L2 w ...
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