Steiner Surface
x
2
y
2
+ x
2
z
2
+ z
2
y
2
+ xyz = 0
x = cos(v) cos(v) sin(2u) / 2
y = sin(u) sin(2v) / 2
z = cos(u) sin(2v) / 2
where 0 <= u <= pi, 0 <= v <= pi
Reference:
http://www.mhri.edu.au/~pdb/geometry/steiner/
See also: Eric Weisstein, CRC Concise Encyclopedia of Mathematics, p.
1731.
