TeX Quellcode:

\begin{array}{rcl} \mathbb{L} &=& \mathbb{L}_{1.1} \cup \mathbb{L}_{1.2} \cup \mathbb{L}_{2.1} \cup \mathbb{L}_{2.2} \cr &=& \left]-\infty;-\sqrt{35}\right[ \cup \left]-5;5\right[ \cup \emptyset \cup \left]\sqrt{35};\infty\right[ \cr &=& \left]-\infty;-\sqrt{35}\right[ \cup \left]-5;5\right[ \cup \left]\sqrt{35};\infty\right[ \end{array}