##  [Normal Crossing](/normal-crossing) 

  ##  [Normal Crossing](https://puremath.quantumdictionary.io/normal-crossing-0) 

  

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- Mathematics & Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A configuration of boundary components or divisors that meet transversely so that locally the union is isomorphic to coordinate hyperplanes intersecting (for two components: locally xy = 0); often called a simple normal crossing when components are smooth and intersections are pairwise transverse.