realization of subgroups of real number
26256
Characterizing Dense Subgroups of the Reals
151130
When is the product of $n$ subgroups a subgroup?
152904
Groups with Same Number Of Elements and Subgroups
91966
Find all subgroups of group
122266
equivalent definition of normal subgroup
14301
Union of subgroups is a subgroup if and only if one subgroup is a subset of the other
10816
Infinitely generated subgroup of a finitely one (weird)
8255
Real polynomials from repunits to repunits ( Putnam 2007 A4)
70543
Does an uncountable discrete subspace of the reals exist?
61064
Finite index subgroup $G$ of $\mathbb{Z}_p$ is open.
89508
Existence of normal subgroups for a group of order $36$
114662
Construction of a specific non-commutative and infinite group (with conditions on the order of the elements)
23941
Normal Subgroups that Intersect Trivially
86872
normalized subgroup by another subgroup
99694
Number of subgroups of $S_4$
113925
Normal Subgroup Counterexample
145339
Index of the subgroup $\operatorname{Im}(f)$