Equation 13.13.5677FFDFF752EB

\begin{equation} \int _{X\setminus \left(\{ \varphi =f_1\} \cup \{ \varphi =f_2\} \right)}\omega ^ n_\varphi = \int _{\left\{ \varphi <\min \{ f_1,f_2\} \right\} }\omega ^ n_\varphi =0. \end{equation}