Formula_11562

\[\begin{gathered}\rho_{V}\left((x)_{m} ;(y)_{m}\right)=\Xi^{-1} \sum_{n=0}^{\infty} \frac{z^{m+n}}{n !} \times \\\times \int d(u)_{n} \sum_{\pi} \varepsilon^{\pi} Q_{m+n}\left((x)_{m},(u)_{n} ;(y)_{m},(u)_{n}\right),\end{gathered}\]