2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157029We show that for any variational symmetry of the problem of the calculus of variations on time scales there exists a conserved quantity along the respective Euler-Lagrange extremals.Partially presented at the 6th International ISAAC Congress, August 13 to August 18, 2007, Middle East Technical University, Ankara, TurkeyOptimization and ControlMathematical PhysicsClassical Analysis and ODEs49K05; 39A12text