Mathematics – Dynamical Systems
Scientific paper
2012-03-06
Mathematics
Dynamical Systems
17 page
Scientific paper
We derive the discrete version of the classical Helmholtz condition.
Precisely, we state a theorem characterizing second order finite differences
equations admitting a Lagrangian formulation. Moreover, in the affirmative
case, we provide the class of all possible Lagrangian formulations.
Bourdin Loïc
Cresson Jacky
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