Equation 21.14.5D50C510DA3A9

\begin{equation} \index{Monge--Ampere equation@Monge--Amp\` ere equation!Hopf reduction} (\omega +\mathrm{dd}^{\mathrm{c}}u)^ n=c(f\circ \pi )\, \mathrm{d}V,\qquad c>0, \end{equation}