Equation 13.13.58F5A7BEAB8003

\begin{equation} \mathds {1}_{\bigcap _ i\{ \varphi _ i=f_ i\} }\, \theta _{1,\varphi _1}\wedge \cdots \wedge \theta _{n,\varphi _ n} = \mathds {1}_{\bigcap _ i\{ \varphi _ i=f_ i\} }\, \theta _{1,f_1}\wedge \cdots \wedge \theta _{n,f_ n}. \end{equation}