eq fix

docs/src/man/models/additive.md

@@ -9,12 +9,10 @@
 
 To realize an additive model all bonds from a point are disconnected from it's neighbors by setting all $\underline{\omega}\langle\boldsymbol{\xi}\rangle = 0$. Within the mesh input an activation time is specified $t_{activate}$. If this time is reached during the simulation process the point is activated.
 
-$
-\underline{\omega}\langle\boldsymbol{\xi}\rangle \in \mathcal{H}_{\textbf{x}} =    \left\{\begin{array}{l}
+$\underline{\omega}\langle\boldsymbol{\xi}\rangle \in \mathcal{H}_{\textbf{x}} =    \left\{\begin{array}{l}
 0 \qquad\text{for }t<t_{activate}\\
 1  \qquad\text{for }t \geq t_{activate}\\
-\end{array}\right.
-$
+\end{array}\right.$
 
 Depended on the process modeled, additional information can be passed to the point or the bonds connected with him.
 For this simple printing process a printing temperature is added utilized the heat source $S_i$. In the presented model, the bonding is ideal an no phase or chemical changes occur. However, in principal such models are applicable. Also it must be noted, that due to mechanical or thermo-mechanical loading bonds can be damaged, if a damage model is applied. In that case it won't be activated again.