Displaying similar documents to “ C -symmetries and reduction of equations without Lie point symmetries.”

Noether’s theorem for a fixed region

Klaus Bering (2011)

Archivum Mathematicum

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We give an elementary proof of Noether's first Theorem while stressing the magical fact that the global quasi-symmetry only needs to hold for one fixed integration region. We provide sufficient conditions for gauging a global quasi-symmetry.