##  [Wavefront Set](/wavefront-set) 

  ##  [Wavefront Set](https://puremath.quantumdictionary.io/wavefront-set-0) 

  

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- Mathematics & Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The subset of the cotangent bundle (with the zero section removed) that records both the points of a manifold where a distribution is singular and the cotangent directions in which that singularity is not microlocally smooth; usually denoted WF(u).