Happy Pi Day! Fans have decided to commemorate the mathematical constant on March 14 for years, but it was until 2009 that Pi Day was designated by the U.S. House of Representatives. For those who don ...

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 ...

WEST LAFAYETTE, Ind. — Purdue University plans to celebrate National Pi Day and an historical refute of an Indiana bill to change the mathematical constant that would have left a sour taste in ...

March 14 is Pi Day, a chance for people around the world to celebrate everyone's favorite mathematical constant "π" (pronounced like the word "pie.") Pi is an incredibly important number in many ...

Today is Pi Day, an annual celebration of the famous mathematical concept that has fascinated people for millenia. But what exactly is π (pronounced like the word "pie"), and where did the concept ...