Formula_4229

\[\begin{gathered}D_{N}\left(q_{1}, \ldots, q_{N}\right)=Q_{N}^{-1} \exp \left(-U_{N} / k T\right), \\Q_{N}=\int \ldots . \int \exp \left(-U_{N} / k T\right) d q_{1} \ldots d q_{N},\end{gathered}\]