CommutatorFactorGroup( G )
CommutatorFactorGroup returns a group isomorphic to G/<G>^prime
where <G>^prime is the derived subgroup of G (see
DerivedSubgroup).
gap> s4 := AgGroup( Group( (1,2,3,4), (1,2) ) );
Group( g1, g2, g3, g4 )
gap> CommutatorFactorGroup( s4 );
Group( g1 )
The default group function GroupOps.CommutatorFactorGroup uses
DerivedSubgroup (see DerivedSubgroup) and FactorGroup (see
FactorGroup) in order to compute the commutator factor group.
GAP 3.4.4