(NBC) - Happy Pi Day! The annual celebration, held every March 14, is your chance to pay tribute to the most famous constant in math and physics: the number you get when you divide the circumference ...

To most, pi is just some number: 3.1415926 … streaming on into infinity, a seemingly endless string of digits. Not so for writer/director Darren Aronofsky, whose debut film, Pi, deals briefly with pi ...

Pi Day is such a huge holiday that it's hard to imagine it didn't exist until 1988. The first party in honor of the amazing mathematical entity known as "pi" began that year when Larry Shaw, a ...

Pi Approximation Day falls on July 22 (written as 22/7 in the day/month date format). It commemorates the common approximation of the mathematical constant π as 22⁄7, which dates back to Archimedes ...