x, y, z, t, 
-2*t^2+2*x^2-2*y^2+2*z^2-1
-2*t^3+2*x^3-2*y^3+2*z^3-1
-2*t^4+2*x^4-2*y^4+2*z^4-1
-2*t^5+2*x^5-2*y^5+2*z^5-1
