We review some recent results on the theory of Lagrangian systems on Lie
algebroids. In particular we consider the symplectic and variational formalism
and we study reduction. Finally we also consider optimal control systems on Lie
algebroids and we show how to reduce Pontryagin maximum principle.Comment: This is a contribution to the Proc. of workshop on Geometric Aspects
of Integrable Systems (July 17-19, 2006; Coimbra, Portugal), published in
SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at
http://www.emis.de/journals/SIGMA