Irrational Mugs

Pi symbol and spiral numbers. Good choice for geeks and anybody with interest in mathematics, sciences, engineering, history, etc. Fascinating smart people for a long time. Celebrate Pi Day, March, 14!

Funny Come to the Math Side we have PI

This is one of the ways to find the value of the constant number pi.

Absurdism Rocks the World

This is a great design to grab for a math teacher or math lover, whether he is your dad or brother or someone you respect.

Gorgeous and edgy.

This mathematical quip is sure to get a chuckle from any aspiring genius. "They Call Me Pi because I'm irrational & don't know how to stop".

The beauty of Euler's formula lies in the fact that three intrinsically irrational or imaginary fundamental constans of math (e, pi, i) make up for a simple formula.

Pi is so irrational!