Linear Algebra Refresher Addition von Vektoren $\left[ {\begin{array}{*{20}{c}} 1\\ 2 \end{array}} \right] + \left[ {\begin{array}{*{20}{c}} 3\\ 1 \end{array}} \right] = \left[ {\begin{array}{*{20}{c}} 4\\ 3 \end{array}} \right]$