Geodesic
An Interpolatory Rational Approximation
Canadian mathematical bulletin, Tome 21 (1978) no. 2, pp. 197-200

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The classical Hermite-Fejér interpolation process is a positive linear mapping from C[-1, 1] into the space of polynomials of degree ≤2n-1. If Tn(x) denotes the Tchebisheff polynomial of degree n and xk = xnk (k = 1,2, ..., n) its roots, then for any given f∈ C[-1, 1] the Hermite-Fejér image Hnf of f is defined by 1.1 
Meir, A. An Interpolatory Rational Approximation. Canadian mathematical bulletin, Tome 21 (1978) no. 2, pp. 197-200. doi: 10.4153/CMB-1978-033-6
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     title = {An {Interpolatory} {Rational} {Approximation}},
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     year = {1978},
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     doi = {10.4153/CMB-1978-033-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1978-033-6/}
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