Equation 16.5.56F8B858957CF5

\begin{equation} \frac{\mathrm{d}}{\mathrm{d}t}E_{\theta }^{\phi }(\eta _ t)=\int _{X} \Bigl ( \psi -\min \{ \varphi ,\psi \} \Bigr )\, \theta _{\eta _ t}^ n. \end{equation}