title	"Kummer's surface"

lookat(4, 0, 6, 0.0, 0.0, 0.0, 0.0)

light {
	colour 1.0, 1.0, 1.0
	location (7.0, 0.0, 10.0)
}

algebraic {
	colour 1.0, 0.0, 0.0
	material 0.0, 0.95, 0.00, 0.0
	equation $$ x^{4} + y^{4} + z^{4} + 1 - x^{2} - y^{2} - z^{2} - y^{2}z^{2} - z^{2}x^{2} - x^{2}y^{2} = 0 $$
}