Equation Icon  [ ] [ ] [ ] [ ] š’³ˆ(Ω ), ˆš’³ †(Ω ′) = ℱˆ(Ω ), ˆā„± †(Ω ′) = 0, ⇐ ⇒ š’³ˆ(t), ˆš’³ (t′) = ˆā„± (t),ℱˆ(t′) = 0, (142 ) [ ] [ ] š’³ˆ(Ω),ℱˆ†(Ω′) = − 2πiā„δ(Ω − Ω ′), ⇐ ⇒ š’³ˆ(t), ˆā„± †(t′) = − iā„δ(t − t′), (143 )