Equation 21.13.446C720B821C17

\begin{equation} \nu (\varphi ,Y)=\nu (\pi ^*\varphi ,E)= \inf \left\{ \langle m-m_{\sigma },u_{\rho _1}+\cdots +u_{\rho _ r}\rangle :m\in \Delta (\theta ,\varphi )\right\} . \end{equation}