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 ...

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

The crossed-out circle symbol is akin to the Greek letter "Phi". It indicates the spot where the light-sensitive matrix or plane of traditional light-sensitive material resides. This is the exact ...