On March 14 mathematicians everywhere enjoy a slice of pie as they recite the digits of math's most famous constant. Pi, defined as the ratio between the circumference of a circle and its diameter, is ...

Pi is an introduction to the extraordinary mystery of math, say some. Others say pi is not special and needs to be reformed. On Pi Day, Let's Gawk At The Beauty And Controversy Of The Math Constant ...

March 14 is celebrated as Pi Day because the date, when written as 3/14, matches the start of the decimal expansion 3.14159… of the most famous mathematical constant. By itself, pi is simply a number, ...

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 ...