Equation Icon  ¯ 2 ¯ ′ ¯ ∂ (uB)L(uB, ζ,ζ) = ∂(τ)G(τ,ζ,ζ ) + ∂(τ)G (τ,ζ,ζ) ⋅ ∂(uB)T, ˙L(uB, ζ, ¯ζ) = ∂ G′(τ,ζ, ¯ζ) ⋅ ˙T, (τ)