Equation 6.7.5D57591458420

\begin{equation} D_ u(a,r)=\frac{\mu (B(a,r))}{2s_{2n-1}r^{2n-2}} =\frac1{r^{2n-2}}\int _{B(a,r)}\mathrm{dd}^{\mathrm{c}}u\wedge (\mathrm{dd}^{\mathrm{c}}|z|^2)^{n-1}. \end{equation}