Equivalent variational formulations of splitting integrators are constructed for Kepler, and modified-Lagrangian analysis shows their LRL-vector errors are competitive with or better than classical symplectic methods.
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Variational Discretizations for Hamiltonian Systems
Equivalent variational formulations of splitting integrators are constructed for Kepler, and modified-Lagrangian analysis shows their LRL-vector errors are competitive with or better than classical symplectic methods.