General way of finding the commutator subgroup of A4.
132856
Find the derived subgroup of $A_4$
151727
If $|G/H|=4$ then $G$ is union of three proper subgroups
151210
How can we find and categorize the subgroups of $\mathbb{R}$?
151193
Simple subgroup of Symmetric Group
156154
Sylow 2 subgroups of S4
39938
Subgroups of a cyclic group and their order.
71822
Commutator algebra in exponents
74586
Prove that every group of order $4$ is abelian
95867
Subgroup of $C^*$ (nonzero complex) with finite index.
43783
Abelian group (Commutative group)
151559
Please help: How to show that Aut(G) is a subgroup of Sym(G)
133770
Subgroups of finite abelian groups.
39866
Automorphism group of the quaternion group
112677
understanding the commutator of dihedral group
128096
Let V denote the Klein 4-group. Show that $\text{Aut} (V)$ is isomorphic to $S_3$
154398
Show that H is a subgroup of G
99999
A question on identifying normal subgroups of $S_4$