Fourier analysis

Fourier analysis

noun Physics, Mathematics.
1.
the expression of any periodic function as a sum of sine and cosine functions, as in an electromagnetic wave function. Compare Fourier series.

Origin:
1925–30; named after J.B.J. Fourier

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World English Dictionary
Fourier analysis (ˈfʊərɪˌeɪ)
 
n
the analysis of a periodic function into its simple sinusoidal or harmonic components, whose sum forms a Fourier series
 
[C19: named after Baron Jean Baptiste Joseph Fourier (1768--1830), French mathematician, Egyptologist, and administrator]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
Fourier analysis  
The branch of mathematics concerned with the approximation of periodic functions by the Fourier series and with generalizations of such approximations to a wider class of functions.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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