##  [Deformation Obstruction](/deformation-obstruction) 

  ##  [Deformation Obstruction](https://puremath.quantumdictionary.io/deformation-obstruction-0) 

  

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- Mathematics & Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

An obstruction class or collection of classes that prevents an infinitesimal or formal deformation of an object from extending to higher order, larger base, or a genuine global deformation; these classes live in obstruction groups computed from the tangent or deformation complex.