Equation Icon  ( T −1 T ) [ ] 1- 2a--⋅ Qs(ξ,ζ-) ⋅ Ms-(ζ)-⋅ Qs(ξ,ζ-)-⋅ a E ℱs[x(t;a,ξ);ζ] = 2 n + ρ(a,ξ) aT ⋅ M (ξ) ⋅ a , (115 )