フーリエ級きゅう数すう

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Meanings

1

noun

Fourier series

mathematics

Mathematical term for representing a periodic function as a sum of sine and cosine waves.

class, rank, grade

数number, strength, fate

フーリエ変へん換かん
フーリエ変換 is the Fourier transform, which generalizes the Fourier series to non-periodic functions.

From French 'Fourier' (after mathematician Joseph Fourier) + 級数 (series).