A Note on Symplectic Algorithms
H. Y. Guo, Y. Q. Li, K. Wu
Abstract
We present the symplectic algorithm in the Lagrangian formalism for the Hamiltonian systems by virtue of the noncommutative differential calculus with respect to the discrete time and the Euler--Lagrange cohomological concepts. We also show that the trapezoidal integrator is symplectic in certain sense.
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