Find number of ring homomorphisms from $\mathbb Z_{12} \to \mathbb Z_{28}$
34599
Number of ring homomorphisms from $\mathbb Z_{12}$ to $\mathbb Z_{28}$.
32443
Find the kernel of a ring homomorphism $f(x)\to f(\sqrt 2)$
47824
Calculation of subgroups of $(Z_{12}, +)$
57691
calculate (find the type of isomorphism) of $\mathbb Z_p/p\mathbb Z_p$ where p is prime
133612
How many isomorphisms are there from $\Bbb Z_{12}$ to $\Bbb Z_{4} \oplus \Bbb Z_{3}$?
108044
Isomorphic extensions of $\mathbb Z_3$ by $\mathbb Z_3 \times \mathbb Z_3$ which are not equivalent
126644
Simple module and homomorphisms
108691
Characterize the natural numbers $n$ such that there is a surjective group homomorphism from $S_n$ to $S_{n-1}$.
30456
The number of $2 × 2$ invertible matrices with entries from field $\mathbb{Z}_p$
97009
Image of ring homomorphism $\phi : \mathbb{Z}[t] \to \mathbb{Q}$?
45627
Find a sub-ring of M(2, $\mathbb{Q}$) which is isomorphic to $\mathbb{Q}$
26661
Ring homomorphisms from $\mathbb{Z}_n$ to $\mathbb{Z}_m$
119648
For which $n$ and $k$ are there nontrivial homomorphisms from $S_n$ to $\mathbb{Z}/k\mathbb{Z}$?
136804
Computing $\mathrm{Hom}(\mathbb Z_n,\mathbb Z_m)$ as $\mathbb Z$-module
141124
Automorphisms of the ring $\Bbb Z[x]$ of polynomials with integer coefficients
20097
Cardinality of the quotient ring $\mathbb{Z}[x]/(x^2-3,2x+4)$
119702
Showing a bijection between the set of ringhomomorphisms $\mathbb{Z}[i] \to R$ and the set of $x \in R$ for which $x^2+1=0$