Thanks for checking out our Aperiodic Monotile T-Shirt!

An aperiodic monotile is a single shape, like a puzzle piece, that can make a non-repeating pattern forever.
This shape, called the HAT was discovered early in 2023.
This is a huge discovery in math – the last discovery, a 2 tile version, was discovered in the 70’s.
Here’s an article about it:
https://www.theguardian.com/science/2023/apr/03/new-einstein-shape-aperiodic-monotile
Some very interesting discussion about this is here, including the about-to-be published paper:
https://discourse.mcneel.com/t/an-aperiodic-monotile/156830
Here’s a generator here to make your own:
https://cs.uwaterloo.ca/~csk/hat/app.h