After years of hunting for math merch that actually gets mathematicians, I finally gave up and made my own.
What started as a running joke about the “empty set” of good math swag turned into a storefront full of shirts, mugs, and tumblers designed for people who think in theorems, celebrate counterexamples, and find beauty in a well-placed epsilon. If you’ve ever wished for merchandise as advanced—and as delightfully nerdy—as the math you love, you’re in the right place. All merchandise features original designs by Haile Gilroy.
"The Counterexample You're Looking For" text in white.
Petersen Graph Graphic
Available in 12 colors
"Abelian Grapes" text in white.
Purple and green grapes illustrating commutative property graphic
Available in 24 colors
"pi symbol" text in black.
Rainbow grid graphic illustrating color-coded digits of pi
Available in 4 colors