Equation Icon  2∫π [ ] H = 1- d𝜃 π2P + e−2Pπ2Q 2 0 2π 1∫ [ −2τ ( 2 2P 2) ] + 2 d𝜃 e P,𝜃 +e Q,𝜃 = H1 + H2, (12 ) 0