I made some t-shirts!
Would it be worth me putting them up for sale on a print-on-demand site?

At absolutely no cost to myself, I've set up a Redbubble shop where you can buy these t-shirt designs: redbubble.com/people/christian

@christianp my goodness! 96+ tracker blocked with Firefox Focus. Cool designs though.

A Mastodon instance for maths people. The kind of people who make $\pi z^2 \times a$ jokes.

Use $ and $ for inline LaTeX, and $ and $ for display mode.