Approximating the Approximant: A Numerical Code for Polynomial Compression of Discrete Integral Operators


The action of various one-dimensional integral operators, discretized by a suitable quadrature method, can be compressed and accelerated by means of Chebyshev series approximation. Our approach has a different conception with respect to other well-known fast methods: its effectiveness rests on the “smoothing effect” of integration, and it works in linear as… (More)
DOI: 10.1023/A:1014030412645

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