Equation 21.13.80E330AEFE18FD

\begin{equation} \operatorname{vol}\left(\theta |_ Y+\mathrm{dd}^{\mathrm{c}}\operatorname{Tr}_ Y^{\theta }(\varphi )\right)=(\dim Y)!\operatorname{vol}_{\dim Y} \Bigl (\Delta (\theta ,\varphi )\cap Q_{\sigma }\Bigr ). \end{equation}