3 ms·

Disappointed the Wikipedia article didn’t explain how in the world they arrived at that formula, why it even works. This type of stuff is pure magic to me.

• aboutruby 8y ago
  There is a proof linked from the Wikipedia article: https://www.davidhbailey.com/dhbpapers/digits.pdf https://www.davidhbailey.com/dhbpapers/digits.pdf
• mhh__ 8y ago
  https://bellard.org/pi/pi_bin.pdf https://bellard.org/pi/pi_bin.pdf