Equation Icon  A (ξ ) := S (ξ) − F (ξ)T ⋅ M (ξ)−1 ⋅ F (ξ), 𝒜,ℬ = 1,...,m. (80 ) (𝒜ℬ) (𝒜 ℬ) (𝒜) (ℬ )