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Chui's conjecture on lower-degree double least squares
Let $f$ be a polynomial of degree $n$ , and form double least squares by first taking optimal polynomial approximants to $1/f$ and then optimal polynomial approximants to the recipr…
Conjecturerefutedhardy-spaces least-squares-approximation optimal-polynomial-approximantsarXiv posted 2 days ago

Chui's conjecture on lower-degree double least squares