Integer Pillows

This t-shirt design features Positive Pete and Nega Nick, two cartoon characters who represent the plus and minus signs in math. The text on the shirt says, "What do you call a math teacher who is always happy? A Positive Integer." This is a funny pun that will appeal to math teachers and students alike.

Hand made draw digital color

This t-shirt design features Positive Pete and Nega Nick, two cartoon characters who represent the plus and minus signs in math. The text on the shirt says, "What do you call a math teacher who is always happy? A Positive Integer." This is a funny pun that will appeal to math teachers and students alike.

A print with fractal pattern called "Integred Power"

Numberblocks - Funny Numbers for kids

This "Fermat's Last Theorem" (a.k.a. "Fermat's Conjecture") design in Japanese showcases the beauty of mathematics and the elegance of the Japanese language. Fermat's Last Theorem, named after famous mathematician Pierre de Fermat (1607–1665), states that the sum of the n-th powers of two positive integers x and y does not equal the n-th power of a positive integer z for any integer value of n greater than 2. This product is perfect for number theory enthusiasts and Japanese language learners alike.

The infamous sum of inverse squared numbers that somehow brings pi into the result, a great gift for math lovers.

The infamous sum of inverse squared numbers that somehow brings pi into the result, a great gift for math lovers.

oneness by Loui Jover

I have no idea why you would ever need this. Do not buy this product.