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YB Wang
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1
Pseudohyperbolic distance and n-best rational approximation in H^2 space
YB Wang
and 1 more
November 25, 2020
Through reducing the problem to rational orthogonal system (Takenaka-Malmquist system), this note gives a proof for existence of n-best rational approximation to functions in the Hardy H^2(D) space by using pseudohyperbolic distance.