## Second Variational Derivative of Gauge-natural Invariant Lagrangians and Conservation Laws *

- M. Francaviglia, M. Palese, E. Winterroth
- 2004

- Published 2003

We define on-shell symmetries and characterize them for Lagrangian systems. The terms appearing in the variation of the Poincaré-Cartan form, which vanish because of field equations, are found to be strongly constrained if the space of solutions has to be preserved. The behaviour with respect to solution dragging is also investigated in order to discuss… CONTINUE READING

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