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standardmap2
2011 Jan 25
1
deSolve: Problem solving ODE including modulo-operator
I have a problem integrating the 'standard map' (
http://en.wikipedia.org/wiki/Standard_map
http://en.wikipedia.org/wiki/Standard_map ) with deSolve:
By using the modulo-operator '%%' with 2*pi in the ODEs (standardmap1), the
resulting values of P and Theta, should not be greater than 2pi. Because
this was not the case, i was thinking that the function 'ode' has some
internal problems with the '%%' or integrating periodical ODEs, so I wrote a
modulo-function by myself (modulo and standardmap2). But...