Equation 16.4.10DC0519B3B917

\begin{equation} \epsilon _ i^{-1}=\frac{1}{2}\left( 1+\left(\frac{\int _ X \theta _{\varphi }^ n}{\int _ X \theta _{\varphi }^ n-\int _ X \theta _{\varphi _ i}^ n}\right)^{1/n} \right). \end{equation}