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Display information for equation id:math.1965.42 on revision:1965
* Page found: Symplektische Struktur des Phasenraums (eq math.1965.42)
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\begin{align}
& {{{\dot{y}}}_{i}}=\sum\limits_{k}^{{}}{\frac{\partial {{y}_{i}}}{\partial {{x}_{k}}}{{{\dot{x}}}_{k}}}\Leftrightarrow \dot{\bar{y}}={{M}^{-1}}\dot{\bar{x}}=\left( {{J}^{-1}}{{M}^{T}}J \right)J{{{\bar{H}}}_{,x}} \\
& \frac{\partial \bar{H}}{\partial {{y}_{i}}}=\sum\limits_{k}^{{}}{\frac{\partial \bar{H}}{\partial {{x}_{k}}}\frac{\partial {{x}_{k}}}{\partial {{y}_{i}}}\Leftrightarrow {{{\bar{H}}}_{,y}}={{M}^{T}}{{{\bar{H}}}_{,x}}} \\
& \Rightarrow \dot{\bar{y}}=\left( {{J}^{-1}}{{M}^{T}}J \right)J{{\left( {{M}^{T}} \right)}^{-1}}{{{\bar{H}}}_{,y}}=-J\left( -1 \right){{M}^{T}}{{\left( {{M}^{T}} \right)}^{-1}}{{{\bar{H}}}_{,y}}=J{{{\bar{H}}}_{,y}} \\
\end{align}
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