单词	Fourier analysis
释义	Fourier analysis /ˈfʊrɪə / /-rɪeɪ/ noun Mathematics The analysis of a complex waveform expressed as a series of sinusoidal functions, the frequencies of which form a harmonic series.His theorem, now called the Riesz - Fischer theorem, which he proved in 1907, is fundamental in the Fourier analysis of Hilbert space.... The nonclassified areas of focus were pure mathematics, applied mathematics, statistics, logistics, applied areas of analysis such as Fourier analysis, and computation. He did considerable work developing new mathematical tools particularly in the area of Fourier analysis and generalised functions.
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