On Pi Day at Duke, We're Talking Math!

For Duke mathematics professors, Pi Day presents a special opportunity to talk about math and share their favorite elements of pi, everyone's favorite irrational figure. 

“There’s a couple of reasons that I like Pi Day. One is you get to eat pie. And another good reason is that Pi Day is Albert Einstein’s birthday,” said Hubert L. Bray, professor of mathematics and physics.

It turns out pi shows up in an astonishing number of equations. Get some toothpicks ready, and math chair Jonathan Mattingly will show you an unexpected use for them involving pi.