The commutativity principle and lagrangian symmetries
Abstract
Description
Using the commutativity of a general variation with the time differentiation we discuss both global and local (gauge) symmetries of a lagrangian from a unified point of view. The Noether considerations are thereby applicable for both cases. A complete equivalence between the hamiltonian and lagrangian formulations is established.
Revtex, 4 pages, no figures
Revtex, 4 pages, no figures