The Lemniscate of Gerono is a special case of the Lissajous curves. The dates for the two mathematicians are fairly close: Gerono (1799-1891) and Lissajous (1822-1880). Historically who has priority for the lemniscate? Was Lissajous aware of Gerono's work when he introduced his curves?
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$\begingroup$ According to French wikipedia "Gerono's lemniscate is a plane curve studied by Grégoire de Saint-Vincent in 1647, next by Gabriel Cramer en 1750". Perhaps the question is when or why did it get this name. Lissajous' work is online (35p.), no mention. $\endgroup$– sand1Jun 15, 2018 at 15:14
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$\begingroup$ Gerono may not have been aware of these eariler sources. My question concerns the (possible) relation between Gerono and Lissajous as far as these curves are concerned. $\endgroup$– Mikhail KatzJun 17, 2018 at 7:59
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$\begingroup$ see also mathoverflow.net/q/303023/11260 $\endgroup$– Carlo BeenakkerJun 18, 2018 at 10:30