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Weighted Least-Squares for a Nearly Perfect Min-Max Fit

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Document pages: 10 pages

Abstract: In this note, we experimentally demonstrate, on a variety of analytic and nonanalytic functions, the novel observation that if the least squares polynomial approximation is repeated as weight in a second, now weighted, least squares approximation, then this new, second, approximation is nearly perfect in the uniform sense, barely needing any further, say, Remez correction.

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