Ptolemy to Fourier: Epicycles
Author: Fawaz Hjouj
This remark highlights the remarkable resemblance of Fourier series to Ptolemy representation of the motion of a planet. We may say that Ptolemy anticipated Fourier analysis some sixteen centuries ago [Zebrowski 2000]. Perhaps Lagrangewas the first to recognize this connection [Goldstein 1977, 171].
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