Pi, a mathematical constant denoted by the Greek letter π, is the ratio of a circle's circumference C to its diameter d: π = C/d. The circumference of a circle is, in turn, equal to 2πr, where r is ...

Possibly not everyone knows that March 14th is Pi Day, in honor of the symbol used to denote the ratio of the circumference of a circle to its diameter. Pi is commonly approximated as 3.14, but it ...

Mathematician Carlos Castillo-Chavez says that pi is so important to math that using its simple, geometric definition denies its greater powers. "[Pi] brings you into the world of mathematics, which ...

WASHINGTON (7News) — It's Friday, March 14 —3/14, the day that every math nerd eagerly anticipates each year. Known around the world as "Pi Day," it’s a time to celebrate one of mathematics' most ...

We bring you this story in case you want to get baking. That's because Saturday is Pi Day — but it's not just any pi day. It's March 14* of the year '15, or 3-14-15 — the first five digits of the ...

David H. Bailey, chief technologist of the Department of Energy's National Energy Research Scientific Computing Center (NERSC) at Lawrence Berkeley National Laboratory, and his colleague Richard ...

It's Pi Day! Happy Pi Day, everyone! No, not that pie. The other Pi. This one. Pi, as you might remember from your High School math class, is a a finite number used to calculate the ratio of a ...

CORONA DEL MAR — Karina Grover wore a lime green T-shirt with the pi symbol, as she sat perched at a table covered in pi swag at Mathnasium. There was a pi coloring sheet, pi trivia, lime-green pi ...

Chris Wilson is the director of data journalism at TIME.com. He is the author of RaphaelJS: Graphics and Visualization on the Web. Whenever celebrity numbers get together, I have to imagine that Pi ...