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\( U=\left\langle\left(\begin{array}{c}1 \\ i \\ 2 i \\ 0\end{array}\right),\left(\begin{array}{c}i \\ 0 \\ -1 \\ 1+i\end{array}\right),\left(\begin{array}{c}2 i-1 \\ -i \\ -2-2 i \\ 2+2 i\end{array}\right)\right\rangle \leq V \)
Was ist nun U ⊥?
