Norbert Wiener

The book is concerned principally with the Plancherel and Tauber theories as modified by other workers in the field, notably Wiener himself. Based on a course of lectures delivered at the University of Cambridge in 1932, it is divided into three separate groups of ideas. The first group deals with the Fourier transform and the Plancherel theorem. The second group treats the notion of an absolutely convergent Fourier series and of a Tauberian theorem. In the last group, Wiener deals with the concept of the spectrum. The final chapter is a lucid eposition of general harmonic analysis.

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