Formula_1810

\[\begin{gathered}{\left[t_{12}, t_{21}\right]=0,} \\{\left[t_{11}, t_{22}\right]=\left(e^{h}-e^{-h}\right) t_{12} t_{21}, t_{i 1}, t_{i 2}=e^{h} t_{i 2} t_{i 1},} \\t_{1 j} t_{2 j}=e^{h} t_{2 j} t_{1 j}, t_{11} t_{22}-e^{h} t_{12} t_{21}=1,\end{gathered}\]