Talk:Liouville dynamical system

• I'm not sure if the solution is formulated clearly. First of all, where does m and a come from in

${\frac {ma^{2}}{2}}\left(\cosh ^{2}\xi -\cos ^{2}\eta \right)^{2}{\dot {\xi }}^{2}=E\cosh ^{2}\xi +\left({\frac {\mu _{1}+\mu _{2}}{a}}\right)\cosh \xi -\gamma$

${\frac {ma^{2}}{2}}\left(\cosh ^{2}\xi -\cos ^{2}\eta \right)^{2}{\dot {\eta }}^{2}=-E\cos ^{2}\eta +\left({\frac {\mu _{1}-\mu _{2}}{a}}\right)\cos \eta +\gamma$

Y was defined without them, so how can they appear in equations above?

Also I can't see the solution in:

$u=\int {\frac {d\xi }{\sqrt {E\cosh ^{2}\xi +\left({\frac {\mu _{1}+\mu _{2}}{a}}\right)\cosh \xi -\gamma }}}=\int {\frac {d\eta }{\sqrt {-E\cos ^{2}\eta +\left({\frac {\mu _{1}-\mu _{2}}{a}}\right)\cos \eta +\gamma }}}.$

What happened to Y which should be on the left side along with :${\sqrt {2}}$? Was it replaced with u by some change of variables? If that's the case then u depends on xi and eta thus xi and eta cannot be expressed in terms of u. I could really use contents of this article in my work, so I hope that these uncertainties could be solved:) Regards. Avalokitesvara (talk) 21:21, 7 May 2009 (UTC)