Meaning of FOURIER SERIES in English

In mathematics, an infinite series used to solve special types of differential equations .

It consists of an infinite sum of sines and cosines, and because it is periodic (i.e., its values repeat over fixed intervals), it is a useful tool in analyzing periodic functions . Though investigated by Leonhard Euler , among others, the idea was named for Joseph Fourier , who fully explored its consequences, including important applications in engineering, particularly in heat conduction.

Britannica English dictionary.      Английский словарь Британика.