∀ (l : Type u_4) (R : Type u₂) {inst : DecidableEq l} [inst_1 : DecidableEq l] [inst_2 : CommRing R] (a a_1 : l ⊕ l),
  a = a_1 → ∀ (a_2 a_3 : l ⊕ l), a_2 = a_3 → LieAlgebra.Orthogonal.JD l R a a_2 = LieAlgebra.Orthogonal.JD l R a_1 a_3