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Talk:Toeplitz operator

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Atypical Terminology

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Under section heading "Theorems", what is meant by "functions with vanishing negative Fourier coefficients"? Is this simply the analytic functions with non-negative Fourier coefficients? If so why not state it this way? If not, it will probably need further explanation. MMmpds (talk) 15:54, 27 January 2023 (UTC)[reply]