Jordi is a user on mathstodon.xyz. You can follow them or interact with them if you have an account anywhere in the fediverse. If you don't, you can sign up here.
Jordi @JordiGH

You know that trick they teach you to evaluate

$\int_{-\infty}^\infty e^{-x^2} dx$

Multiply it by itself and change to polar coordinates?

Turns out there's a theorem that this trick doesn't generalise at all! It works for this integral and this integral only! (Modulo some trivial multiplicative constants.)

cs.stmarys.ca/%7Edawson/Poisso

· Web · 3 · 5