New posts in Pi

π Day puzzle for 3/14

Solve the CodeSprint4 Leibniz code golf challenge in Python in 66 characters

Good rational approximations of pi

Calculate digits of Pi

Calculate 500 digits of pi

Comparing between regular polygons

Infinite Rational numbers add up to give irrational numbers.

How do you prove $\pi =\sqrt{12}\sum_{n\ge 0}\frac{(-1)^n}{3^n(2n+1)}$?

Iterative algorithm for $\pi$?

Is $22/7$ the closest to $\pi$, among fractions of denominator at most $50$?