The kinematic generators, which generate transformations tangent to the light front, are free of interaction. These include P + := H + P → → ⋅ ⋅ n ^ ^ and P → → ⊥ ⊥ := P → → − − n ^ ^ ( n ^ ^ ⋅ ⋅ P → → ) , which generate translations tangent to the light front, J 3 := n ^ ^ ⋅ ⋅ J → → which generates rotations about the n ^ ^ axis, and the generators K 3 := n ^ ^ ⋅ ⋅ K → → , E 1 and E 2 of light-front preserving boosts,