STEINER SURFACE
\[ X(u,v)=(\sin 2u\cos v,\sin 2u\sin v,\sin^2u\sin 2v),\quad 0\le u\le 2\pi,\ 0\le v\le 2\pi \]
generated with ps-tricks
STEINER SURFACE
\[ X(u,v)=(\sin 2u\cos v,\sin 2u\sin v,\sin^2u\sin 2v),\quad 0\le u\le 2\pi,\ 0\le v\le 2\pi \]
generated with ps-tricks