Guozhu Shang

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For r > 0 let AP(Dr ) denote the set of 2π -periodic functions which are analytic on the closed rectangle Dr = {z ∈ C : 0 ≤ Re z ≤ 2π, |Im z| ≤ r}, and let AP[0, 2π ] = AP(D0). For a positive integer n let Zn = {tn,1, tn,2, . . . , tn,n} be a set of nodes in the interval [0, 2π) such that tn,1 < tn,2 < · · · < tn,n , and let T Z n f denote the trigonometric(More)
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