4 External Rings
  
  
  4.1 External Rings: Representation
  
  4.1-1 IsHomalgExternalRingRep
  
  IsHomalgExternalRingRep( R )  Representation
  Returns:  true or false
  
  The internal representation of homalg rings.
  
  (It is a representation of the GAP category IsHomalgRing.)
  
  
  4.2 Rings: Constructors
  
  
  4.3 External Rings: Operations and Functions