(Q4894565)

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Bernstein's theorem

in approximation theory, a converse to Jackson's theorem

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approximation theory

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Sergei Natanovich Bernstein

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defining formula

\sup _{0\leq x\leq 2\pi }|f(x)-P_{n}(x)|\leq {\frac {C(f)}{n^{r+\alpha }}}

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WikiProject Mathematics

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Bernstein's theorem (polynomials)

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Wikipedia(1 entry)

enwiki Bernstein's theorem (approximation theory)

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