Formula_20733

\[\begin{gathered}\boldsymbol{a}+\boldsymbol{b}=\left\{x_{1}+y_{1}, x_{2}+y_{2}, \ldots, x_{n}+y_{n}\right\}, \\\lambda \boldsymbol{a}=\left\{\lambda x_{1}, \lambda x_{2}, \ldots, \lambda x_{n}\right\},\end{gathered}\]