Equation 17.3.6BC6BC1B194C2

\begin{equation} E_\theta ^\phi (v)-E_\theta ^\phi (u) =\frac1{n+1}\sum _{j=0}^ n\int _ X(v-u) \langle \theta _ v^ j\wedge \theta _ u^{n-j}\rangle . \end{equation}