Math fanatics from all around the world and everyone else who just loves ancient Greek pi (or pie) celebrate on March 14.

Represented in abbreviated form by the somewhat familiar sequence 3.14, pi, or the Greek letter π, is an iconic symbol seen in mathematical equations and, in more recent decades, merchandise like ...

WEST PALM BEACH, Fla. (AP) — Math enthusiasts around the world, from college students to rocket scientists, celebrate Pi Day, ...

College students, rocket scientists and math enthusiasts around the ... William Jones began using the Greek symbol for the number. Why that letter? It’s the first Greek letter in the words ...