∀ (p : Type u_2) (q : Type u_3) (R : Type u₂) [inst : DecidableEq p] [inst_1 : DecidableEq q] [inst_2 : CommRing R]
  [inst_3 : Fintype p] [inst_4 : Fintype q] {i : R},
  i * i = -1 → LieAlgebra.Orthogonal.Pso p q R i * LieAlgebra.Orthogonal.Pso p q R (-i) = 1