Equation 16.15.1514AD13D091C3

\begin{equation} D_ gS=|\nabla \Psi |_ g^2+|\overline\nabla \Psi |_ g^2 +2\operatorname{Re}\langle D_ g\Psi ,\Psi \rangle _ g +\langle \mathcal R\Psi ,\Psi \rangle _ g; \end{equation}