The geometry of autonomous metrical multi-time Lagrange space of electrodynamics.
Neagu, Mircea (2002)
International Journal of Mathematics and Mathematical Sciences
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Neagu, Mircea (2002)
International Journal of Mathematics and Mathematical Sciences
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Creţu, Ciprian (1997)
General Mathematics
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W. Sarlet (1996)
Extracta Mathematicae
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Ján Brajerčík (2011)
Czechoslovak Mathematical Journal
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Let be a principal bundle of frames with the structure group . It is shown that the variational problem, defined by -invariant Lagrangian on , can be equivalently studied on the associated space of connections with some compatibility condition, which gives us order reduction of the corresponding Euler-Lagrange equations.
Manuel de León, David Martín de Diego (1996)
Extracta Mathematicae
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Given a Lagrangian system with non-holonomic constraints we construct an almost product structure on the tangent bundle of the configuration manifold such that the projection of the Euler-Lagrange vector field gives the dynamics of the system. In a degenerate case, we develop a constraint algorithm which determines a final constraint submanifold where a completely consistent dynamics of the initial system exists.