Q(U + t v), v = (v1, v2, -v1 - v2):
  coefficient of t^0: 0
  coefficient of t^1: 0
  coefficient of t^2: 0
  coefficient of t^3: 0
  coefficient of t^4 = q4 |v|^4 with q4 = 0.348057255679470
  beta = 3 nu/(4 L2^2) = 0.816804341850220,  kappa_3 = 15.8148367244575
omega(U + t v):
  coefficient of t^0: 0
  coefficient of t^1: 0
  coefficient of t^2 = omega2 |v|^2 with omega2 = -3.69264165895213
OK
