Inverted Boys Surface P(z) = Re ( a(z) V(z) ) where: z = exp(u + i v) a(z) = 1/(z^3 - z^{-3} + sqrt(5) ) and V(z) = ( i ( z^2 + z^(-2) ) , z^2 + z^(-2) , (2 i/3) ( z^3 + z^(-3) ) )