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It is demonstrated by elementary means that the Chebyshev polynomials Tn (z) areoptimal for ellipses in C in a way that extends the classical properties for Tn (x) relative to the real interval [-1, 1 ...
Sang Dong Kim, Byeong Chun Shin, CHEBYSHEV WEIGHTED NORM LEAST-SQUARES SPECTRAL METHODS FOR THE ELLIPTIC PROBLEM, Journal of Computational Mathematics, Vol. 24, No. 4 (JULY 2006), pp. 451-462 ...
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