Cosets modulo $(2+i)$ in $\mathbb{Z}[i]$
6121
Quotient ring of Gaussian integers
102938
$\Bbb F_2[X]$ modules with 8 elements
89415
Number of homomorphisms from $(\mathbb Q^+ , \,\cdot\,)$ to $(\mathbb Z_n , +)$
81068
Finding the left and right cosets of H = {(1), (12), (34), (12) ○ (34)} in S4
38549
$\mathbb{Q}(\sqrt{n}) \cong \mathbb{Q}(\sqrt{m})$ iff $n=m$
107821
The ring of integers of $\mathbf{Q}[i]$
51687
Is the set $ \ (\mathbb{Z}_p \setminus \mathbb{Z}) \cap \mathbb{Q}$ non-empty?
93031
How to show that $\mathbb{Z}$ with the operation $m*n=m+(-1)^m n$ is associative?
143069
What are the direct summands in $\mathbb{Z}^n$?
86807
The units of $\mathbb Z[\sqrt{2}]$
146990
How to find the number of automorphisms on $\mathbb Z_2\times \mathbb Z_4$
102721
Number of elements in the ring $\mathbb Z [i]/\langle 2+2i\rangle$
13289
Order of Double Coset
149578
Subgroups of $(\mathbb Z_n,+)$
157915
Isomorphism between the group $(\mathbb Z[x], +)$ and $(\mathbb Q_{>0}, .)$
41673
Solve congruence system $\ x\equiv m_i-1 \pmod{m_i}\,$ for $\,i = 1,\ldots, k$
5699
The number of ring homomorphisms from $\mathbb{Z}_m$ to $\mathbb{Z}_n$