Isomorphic distinct powers of the same ring
49166
$R^n \cong R^m$ iff $n=m$
123860
When are two direct products of groups isomorphic?
59811
Finite Abelian groups with the same number of elements for all orders are isomorphic
93632
Existence of a ring homomorphism implies characteristic divisibility
18540
Isomorphism from $\mathbb{C}[G]$ to $\prod_{i=1}^h M_{n_i}(\mathbb{C})$.
68167
Intersection of powers of an ideal in a Noetherian ring
55432
Infinite distinct factorizations into irreducibles for an element
61491
Complex Ring Isomorphism
157585
Structure theorem of finite rings
45627
Find a sub-ring of M(2, $\mathbb{Q}$) which is isomorphic to $\mathbb{Q}$
23521
Power Set of $X$ is a Ring with Symmetric Difference, and Intersection
32772
Proving units in a ring
66708
Elementary isomorphism between $\operatorname{PSL}(2,5)$ and $A_5$
120968
Isomorphism of stabilizer over $S_n$ to $S_{n-1}$
52556
Isomorphism of $S^1$.
57732
Rings of fractions and homomorphisms
110808
Isomorphisms preserve cyclic