I'm going to try to toot a daily .
Here's an itsphun tetrahedron.
mathstodon.xyz/media/ONecVjhgv

2
A Möbius strip.

We always ignore the actual shape of a Möbius strip because the reason it's interesting is its topology.

Mahadevan and Keller cast elegance to the wind and numerically solved the resting shape of a Möbius strip: read.somethingorotherwhatever.

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.