#π

The formula Maura was referring to is: e^(i * π) + 1 = 0

It’s a full celebration of five fundamental constants in one breathtaking equation. ^_^

Since it’s Pi-day (March 14), let’s appreciate Euler’s number e by defining π with it. 😎

e^(i * x) = cos(x) + i * sin(x)

Then we can define π as:

π = min { x ∈ ℝ⁺ | cos(x) = -1 and sin(x) = 0 }

Wilson Hall, Fermilab, Batavia, Illinois