= Noether's second theorem
{wiki=Noether's_second_theorem}
Noether's second theorem is a result in theoretical physics and the mathematics of symmetries in field theory, which stems from the work of mathematician Emmy Noether. While Noether's first theorem links symmetries of the action of a physical system to conservation laws, her second theorem addresses a different aspect of symmetry, specifically related to gauge symmetries or more general symmetries of a system that might not lead to simple conservation laws.
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