Hi
just to point out an oddity.
I have to reduce the precision of the vertex location in order to print the tetrahedron.
if I comment the line in the code below : tetrahedronLoc=roundMap(tetrahedronLoc,precis=5) I got an error.
https://sagecell.sagemath.org/?q=rossmq (sorry but I forgot how to put code in a post !)
