Fourier seriesFourier series
Math. the expansion of a periodic function into a series of sines and cosines
Origin of Fourier seriesformulated by Baron Fourier
An infinite series whose terms are constants multiplied by sine and cosine functions and that can, if uniformly convergent, approximate a wide variety of functions.
Origin of Fourier seriesAfter Baron Jean Baptiste Joseph Fourier.
(plural Fourier series)
Named after Joseph Fourier, a French mathematician