Originally defined as the ratio between the circumference of a circle and its diameter, pi — written as the Greek letter π — appears throughout mathematics, including in areas that are completely ...

Math lovers celebrate today (3/14) as Pi Day, in honor of the irrational number pi. Pi, or π, is defined as the ratio of the circumference of a circle to its diameter. Pi is an irrational number, ...

KUSA – If you're a math nerd, March 14 is a pretty magical day. And this year, 03/14/15 is especially awesome. And while some use Pi Day as an excuse to eat pie (the food)/make puns, others use Pi Day ...

The famous mathematical ratio, estimated to more than 22 trillion digits (and counting), is the perfect symbol for our species’ long effort to tame infinity. By Steven Strogatz This article, ...

Ron Callaway portrays Albert Einstein's ghost in a comedy skit during a Pi day celebration hosted by The Alferd Packer Memorial Band Wednesday, March 14, 2012 at the Lawrence Community Theater. The ...

Ah, mathematical holidays. Pi Day is a celebration of the irrational number that is the ratio of the circumference of a circle to its diameter. It occurs every March 14 (because π is equal to 3.14159.