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Invariance of Lagrangian systems. (English) Zbl 0273.58004
General Relativity, Papers Honour J. L. Synge, 85-99 (1972).

37J99 Dynamical aspects of finite-dimensional Hamiltonian and Lagrangian systems
70G10 Generalized coordinates; event, impulse-energy, configuration, state, or phase space for problems in mechanics
58A25 Currents in global analysis
58A20 Jets in global analysis