##  [Schreier Refinement Method](/schreier-refinement-method) 

  ##  [Schreier Refinement Method](https://puremath.quantumdictionary.io/schreier-refinement-method-0) 

  

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- Mathematics & Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A technique for taking two subnormal (or subseries) chains of subgroups of a group, interleaving their terms to produce a common refinement, and comparing the resulting factor groups so as to relate and reorder the composition factors of the original series.