##  [Invariant Method](/invariant-method) 

  ##  [Invariant Method](https://puremath.quantumdictionary.io/invariant-method-0) 

  

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- Mathematics & Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A technique that identifies a quantity, parity, algebraic expression, or other feature that remains unchanged (invariant) under a specified set of allowed transformations or moves, and uses that invariance to prove impossibility results, classify outcomes, or restrict reachable configurations.