∇ (nabla or del) was 'popularized' by Tait, Gibbs, Maxwell, Heaviside, Kelvin. They are credited with the development of the version of vector calculus most popular today. ƒ (florin, f with hook sign) function sign was first used by Euler in 1734.
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I feel math will be fun if they taught history before formulas.
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I've also seen it referred to as "atled," or "delta" backwards.
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I study in French and I never heard it being referred to by any other names than atled until now
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a 12-stringed harp apparently https://en.m.wikipedia.org/wiki/History_of_religious_Jewish_music … (first section)
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Beautiful memories of the nabla symbol in tensor calculus.
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Nice. Now I’d know to call it Nevel (in hebrew)
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Intresting... In Hebrew a harp is Nevel, quite smiliar.
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the word Harp comes from the Greek “άρπα”. The word “nabla” I have never heard in Greek tbh
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