Equation Icon  ( ) F 1 − χF F(Ω )χxx(Ω ) Oˆ(0)(Ω ) (0) χF F(Ω ) (0) ˆO (Ω) = ------------------ˆO(Ω ) = ---------------+ ˆF (Ω) − --------ˆO (Ω ) + G (Ω ) χOF (Ω )χxx(Ω ) χOF (Ω )χxx (Ω) χOF (Ω ) 𝒳ˆ(Ω ) ≡ χ--(Ω)-+ ℱˆ(Ω ) + G (Ω), (140 ) xx