by DonSoreno » Fri Jun 17, 2022 8:41 pm
Perhaps tetraspace inhabitants would have 2 different high bars, one that resembles a prismic cylinder and one that resembles a spherinder.
You can take the cartesian product of a 2d disk, and any arbitrary 2d shape, like a pentagon or a "H" shaped cut-out, to which you can attach a cubinder on all 4 corners, and thus you have a 4d wheel axle.