Is any group the group of units of some ring?
158873
Is every group the unit group of some ring?
115585
Do Boolean rings always have a unit element?
49338
Is every group a Galois group?
68201
Cyclic group of order $n$
10908
Associated elements in a ring
4353
Unit group of power series ring
93703
Groups of units of $\mathbb{Z}\left[\frac{1+\sqrt{-3}}{2}\right]$
35222
Characterizing units in polynomial rings
157840
Is it true that $(R\times S)[G]\cong R[G]\times S[G]$?
140471
Is $ G \cong G/N \times N$?
124237
Group equals union of three subgroups
147517
Any group of order $n$ satisfying $\gcd (n, \varphi(n)) =1$ is cyclic
146952
When can I say that $\cup H_i$ is a group?
79452
How to prove that it is a group?
16023
Are associates unit multiples in a commutative ring with $1$?
48393
Abelian groups of order n.
67554
In a group, the number of non-self-inverse elements is even