Equation Icon  ( ) ( ) NˆY (Ω ) = 𝒴𝒴𝒴†(Ω )aˆ(Ω) = 𝒴∗(Ω ) 𝒴 ∗(Ω) ⋅ ˆac(Ω) . (86 ) c s ˆas(Ω )