The "Boy-cube".
The first implicit equation
of the Boy was given by the Frenchman
Apéry, who was able to reach this result because
I had shown that this surface could be described
using elliptic meridians. The Boy is abundantly
described in my comic book "Le Topologicon" (see the "cd-Lanturlu").
I invented the "Boy-Cube" in 83. You will find all
the assembly instructions in the Topologicon, page 47.
Smooth Version