Equation 23.2.22F2EE69C448EB

\begin{equation} D_\lambda u =\mathrm{dd}^{\mathrm{c}}u-\mathrm{d}u\wedge \lambda ^{\mathrm c} -\lambda \wedge \mathrm d^{\mathrm c}u +u\bigl (\kappa _\lambda +\lambda \wedge \lambda ^{\mathrm c}\bigr ). \end{equation}