Formula_23046

\[\left.\begin{array}{c}{\left[Q_{j}, P_{k}\right]=i \hbar \delta_{j k},\left[Q_{j}, Q_{k}\right]=0,\left[P_{j}, P_{k}\right]=0,} \\i, j=1, \ldots, d, d \in \mathbb{N},\end{array}\right\}\]