Is $\mathbb{Z}[i]/\langle 2+i\rangle$ a simple extension of $\mathbb{Z}_5$?
6121
Quotient ring of Gaussian integers
91113
$ \exists a, b \in \mathbb{Z} $ such that $ a^2 + b^2 = 5^k $
95669
Solutions of $|z| = z^5$ in $\Bbb{C}$?
57166
Showing that $\Bbb R[x] / \langle x^2 + 1 \rangle$ is isomorphic to $\Bbb C$ question
9794
Quotient ring of Gaussian integers $\mathbb{Z}[i]/(a+bi)$ when $a$ and $b$ are NOT coprime
37219
Quadratic Integers in $\mathbb Q[\sqrt{-5}]$
63478
Is $\mathbb{Q}(\sqrt{2}) \cong \mathbb{Q}(\sqrt{3})$?
42810
Is $(\mathbb{Q},+)$ isomorphic to $(\mathbb{Q}^n,+)$?
127237
Let $I = \{a +ib \in \Bbb Z[i] : a$ and $b$ are both multiple of $5\}$.
90433
Isomorphisms between $(\mathbb Z_4,+)$ and $(U_5,*)$
129239
Additive quotient group $\mathbb{Q}/\mathbb{Z}$ is isomorphic to the multiplicative group of roots of unity
35279
It's $\mathbb{Z}\subseteq \mathbb{Z}[X]/(X^5-1)$ an integral extension?
92211
When are $\mathbb Z_m$ and $\mathbb Z_n$ homomorphic?
1720
Show that $\langle 2,x \rangle$ is not a principal ideal in $\mathbb Z [x]$
2626
Show $\langle a^m \rangle \cap \langle a^n \rangle = \langle a^{\operatorname{lcm}(m, n)}\rangle$
66708
Elementary isomorphism between $\operatorname{PSL}(2,5)$ and $A_5$
36142
What is $\mathbb Z \oplus \mathbb Z / \langle (2,2) \rangle$ isomorphic to?