Isomorphism map between $\frac{\mathbb{Z}_3[x]}{(x^2+x+2)}$ and $ \frac{\mathbb{Z}_3[x]}{(x^2 + 1)} $
87160
Prove $\mathbb{Z}_3[x]/(x^2+1)$ and $\mathbb{Z}_3[x]/(x^2+x-1)$ are isomorphic.
120183
Prove that $S_3\times\mathbb{Z}_2$ is isomorphic to $D_6$
115663
Proving an isomorphism using the isomorphism theorems
121449
An isomorphism from $GL_{2}(\mathbb{F_{2}})$ to $S_{3}$
136083
Show that $\sigma\circ\phi : G_1 \to G_3$ is an isomorphism
129239
Additive quotient group $\mathbb{Q}/\mathbb{Z}$ is isomorphic to the multiplicative group of roots of unity
154847
homomorphism from $S_3$ to $\mathbb Z/3\mathbb Z$
85752
Show that $M=\frac{\mathbb{Z}^3}{\langle (3,3,1),(2,2,2)\rangle}$ is isomorphic to $\mathbb{Z} \oplus \mathbb{Z}_4$ as $\mathbb{Z}$-modules
42810
Is $(\mathbb{Q},+)$ isomorphic to $(\mathbb{Q}^n,+)$?
92517
Easy way to show that $\mathbb{Z}[\sqrt[3]{2}]$ is the ring of integers of $\mathbb{Q}[\sqrt[3]{2}]$
63478
Is $\mathbb{Q}(\sqrt{2}) \cong \mathbb{Q}(\sqrt{3})$?
137201
Classifying $\mathbb{Z} \times \mathbb{Z} \times \mathbb{Z} / \langle(3,3,3)\rangle$
40321
$\operatorname{Aut}(\mathbb Z_n)$ is isomorphic to $U_n$.
18343
Counting homomorphisms between $\Bbb Z$ and $\Bbb Z_n$ and also between $\Bbb Z_n$ and $\Bbb Q$
73652
Exhibiting an isomorphism between two finite fields
30401
Determining the structure of the quotient ring $\mathbb{Z}[x]/(x^2+3,p)$
119160
Isomorphism between complex numbers minus zero and unit circle