Subgroup of integers
33387
Proof that $n\Bbb Z \leq \Bbb Z$ and are the only subgroups of $\Bbb Z$
130993
4 Element abelian subgroup of S5.
88262
How to enumerate subgroups of each order of $S_4$ by hand
153797
Is a quotient group a subgroup?
71035
Non abelian subgroup of a abelian group.
129830
A group with no proper non-trivial subgroups
98474
Show the existence of a certain subgroup of F2
91997
Product of two subgroups the whole group?
72048
Finding Sylow 2-subgroups of the dihedral group $D_n$
103829
Find the subgroups of A4
93703
Groups of units of $\mathbb{Z}\left[\frac{1+\sqrt{-3}}{2}\right]$
146760
Prove that H is a subgroup of G
48369
discrete subgroups of euclidean space
110708
On proving that a finitely generated group has a finite number of subgroups with index $n$.
89508
Existence of normal subgroups for a group of order $36$
133770
Subgroups of finite abelian groups.
75568
Subgroup of index $2$ is Normal