Higher order Lagrange-Poincaré and Hamilton-Poincaré reductions

@article{GayBalmaz2011HigherOL,
  title={Higher order Lagrange-Poincar{\'e} and Hamilton-Poincar{\'e} reductions},
  author={François Gay‐Balmaz and Darryl D. Holm and Tudor S. Ratiu},
  journal={Bulletin of the Brazilian Mathematical Society, New Series},
  year={2011},
  volume={42},
  pages={579-606}
}
Motivated by the problem of longitudinal data assimilation, e.g., in the registration of a sequence of images, we develop the higher-order framework for Lagrangian and Hamiltonian reduction by symmetry in geometric mechanics. In particular, we obtain the reduced variational principles and the associated Poisson brackets. The special case of higher order Euler-Poincaré and Lie-Poisson reduction is also studied in detail. 

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