TeX Quellcode:

\vec{a}^{\,T} \cdot \vec{b} = \begin{pmatrix}a_1;\, a_2;\, a_3\end{pmatrix} \cdot \begin{pmatrix}b_1\cr b_2\cr b_3\end{pmatrix} = a_1b_1+a_2b_2+a_3b_3