Proposition 16.5.3651CFFEE97C34

\begin{equation} \int _ X \left(\psi -\varphi \right)\theta ^ n_{\psi }\leq E_{\theta }^{\phi }(\psi )-E_{\theta }^{\phi }(\varphi )\leq \int _ X \left(\psi -\varphi \right)\theta ^ n_{\varphi }. \end{equation}