Abstract
This note is concerned with a theorem of Plancherel for Fourier transforms which corresponds to the Parseval theorem for Fourier series. By Wσ we denote the class of integral functions {f(z)} which are of exponential type σ and such that each of the functions {f(x)} belongs to L 2 (-∞, ∞) for values of z = x on the real axis.
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