A short history of PI day: What is it and where did it come from?
Today is 3-14-15, or the first five digits of the mathematical constant pi: 3.141592653.
What makes pi so special? It's the most widely known mathematical constant,
But what makes it so special? Pi is the 16th letter of the Greek alphabet, but it's also the best known mathematical constan
What makes it special? Pi is the 16th letter of the Greek alphabet, and also the best known mathematical constant. This is a number, or something representing a number, in a mathematical equation.