Le 18/01/2012 11:34, Lars R. nous fit lire :
> Do anyone know a common name of this nice thing? :-)> > Lars R.
As a 6th order polynomial, it might (unchecked!) be some aspect of Boy's
Surface.
You might enjoy Goursat's dodecaedric surfaces...
http://www.mathcurve.com/surfaces/goursat/goursat.shtml