Most of the lectures that I have watched online say that a symmetry(adsbygoogle = window.adsbygoogle || []).push({}); when the mathematicalexistsof the Lagrangian does not change as a result of some transformation, like a local gauge change. But how does nature "know" the mathematical form of the Lagrangian? Obviously, I am missing the point.form

Thanks in advance.

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# I Mathematical Format of Lagrangian vs Symmetries

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