If \( G \) is a group and \( N \) is a subgroup of \( G \) generated by commutators ( \( x y x^{-1} y^{-1} \) ), then \( N \) is a normal subgroup and \( G / H \) is abelian iff \( N \le H \). Here \( N \) …
If \( G \) is a group and \( N \) is a subgroup of \( G \) generated by commutators ( \( x y x^{-1} y^{-1} \) ), then \( N \) is a normal subgroup and \( G / H \) is abelian iff \( N \le H \). Here \( N \) …