Mathematician proves that Möbius band must have an aspect ratio greater than √3(phys.org)
phys.org
Mathematician proves that Möbius band must have an aspect ratio greater than √3
https://phys.org/news/2023-09-mathematician-mbius-band-aspect-ratio.html
https://math.stackexchange.com/a/734261
Like the author of the answer, I am unsure whether this counts.