Equation 18.1.33BCAEFDCBCBE3

\begin{equation} \lim _{k\in I}\operatorname{vol}\left( \theta _{1,\varphi _1^ k},\ldots , \theta _{n,\varphi _ n^ k}\right)=\operatorname{vol}\left( \theta _{1,\varphi _1},\ldots , \theta _{n,\varphi _ n}\right). \end{equation}