Originally defined as the ratio between the circumference of a circle and its diameter, pi — written as the Greek letter π — ...

Math lovers celebrate March 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, meaning ...

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 ...

When you hear the words "rational" and "irrational," they might bring to mind the relentlessly analytical Spock in "Star Trek." If you're a mathematician, however, you probably think of ratios between ...

This all started with Pi and now I can't stop. Let me summarize what I have done so far: Pi day in the US is March 14 th. This doesn't work for non-USAians since they write the date in a reasonable ...