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John Carlos Baez /
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2024-12-23 18:01:11

John Carlos Baez on Nostr: The number pi has an evil twin! It's a number called ϖ with many properties similar ...

The number pi has an evil twin! It's a number called ϖ with many properties similar to π. There are even mutant trig functions connected to this number, called sl and cl.

So maybe while you were studying trig in high school, some kid in another galaxy was having to memorize all the identities for these other functions.

I doubt it. Just as pi and trig functions are connected to the circle, this number and its mutant trig functions are connected to a curve shaped like the symbol for infinity, ∞.

This curve is called a 'leminscate', and I'll show it to you in my next post. A civilization will probably only get interested in ϖ when it gets interested in the lemniscate.... or the deeper math it's connected to. On our planet, it was Bernoulli, Euler and Gauss who discovered this stuff.

(Why does unicode even have the symbol ϖ? Here's why: it's a script version of the Greek letter pi, sometimes called 'varpi' or 'pomega'.)

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