 ##  [Gauge Symmetry](/gauge-symmetry) 

  ##  [Gauge Symmetry](https://natural.quantumdictionary.io/gauge-symmetry-0) 

  
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**Natural &amp; Formal Sciences Dictionary**

 
Definition

Gauge symmetry is a local (pointwise) redundancy of field variables in a physical theory: transformations parameterized by arbitrary functions of spacetime that change field representations but leave all gauge-invariant observables unchanged.