Is every group the unit group of some ring?
61391
Which finite groups are the group of units of some ring?
105471
How to prove that if each element of group is inverse to itself then group commutative?
47617
Are groups with all the same Hom sets already isomorphic?
111824
Sum of nilpotent and element is a unit in ring?
146952
When can I say that $\cup H_i$ is a group?
39938
Subgroups of a cyclic group and their order.
115920
Showing $R$ is a local ring if and only if all elements of $R$ that are not units form an ideal
642
Does a surjective ring homomorphism have to be surjective on the unit groups?
104505
Is every normal subgroup the kernel of some endomorphism?
72991
Is every group the automorphism group of a group?
19668
Does every group whose order is a power of a prime p contain an element of order p?
156941
Subgroups of $\mathbb{Z}$
2458
Multiplicative group $(\mathbb R^*, ×)$ is group but $(\mathbb R, ×)$ is not group, why?
56607
gcd and order of elements of group
67919
Subgroup of the unit circle under complex multiplication
16023
Are associates unit multiples in a commutative ring with $1$?
21840
Zero divisors and units for the ring $\mathbb{Z}/n\mathbb{Z}$ with integer $n$