22 Oct
2020
22 Oct
'20
3:15 p.m.
Yes (I presume this means in R^3). To get on with all faces rectangles, drill a hole straight through a rectangular solid and look at its boundary. Now apply a random linear mapping and all the rectangles will probably turn into parallelograms. —Dan Jim Propp wrote: ----- George Hart’s Celebration of Mind talk (just concluded) makes me wonder: is there a non-self-intersecting torus surface made of parallelograms? -----