commutator of free group has infinite rank
68672
Commutator subgroup of rank-2 free group is not finitely generated.
30794
Commutator Group of $GL_2(R)$ is $SL_2(R)$
10816
Infinitely generated subgroup of a finitely one (weird)
130792
Commutator of a group
47086
Quotient rings and free modules
127121
The identity cannot be a commutator in a Banach algebra?
123610
How to show that the commutator subgroup is a normal subgroup
58307
Commutator Subgroup and the Largest Abelian Quotient
88199
The commutator subgroup of a quotient in terms of the commutator subgroup and the kernel
45576
A surjective homomorphism between finite free modules of the same rank
32458
Does the rank-nullity theorem hold for infinite dimensional $V$?
114662
Construction of a specific non-commutative and infinite group (with conditions on the order of the elements)
76317
Let $C$ be the commutator subgroup of $G$. Prove that $G/C$ is abelian
81040
proof about commutative operators and T-cyclic vectors
46263
Automorphisms of infinite abelian groups
85677
Is there a free subgroup of rank 3 in $SO_3$?
3456
Commutator of two normal subgroups with trivial intersections