Equation Icon  [ b a] H = Exp ha (t)K b ∈ GL (10, ℝ), [ ] (9.119 ) T = Exp -1𝒜abc (t)Eabc + -1𝒜a ⋅⋅⋅a (t)Ea1 ⋅⋅⋅a6 + 1-𝒜a|b⋅⋅⋅b(t)Ea|b1⋅⋅⋅b8 + ⋅⋅⋅ . 3! 6! 1 6 9! 1 8