Number of non trivial ring homomorphisms from $\mathbb Z_{12}$ to $\mathbb Z_{28}$
34599
Number of ring homomorphisms from $\mathbb Z_{12}$ to $\mathbb Z_{28}$.
84114
Does there exist a surjective homomorphism from $(\mathbb R,+)$ to $(\mathbb Q,+)$ ?
149856
Image of ring homomorphism is a subring
51695
Finding all homomorphisms between $\mathbb{Z}/m\mathbb{Z}$ and $\mathbb{Z}/n\mathbb{Z}$
3606
Wild automorphisms of the complex numbers
115973
Computing the number of nonisomorphic finite abelian groups of order $n$
97009
Image of ring homomorphism $\phi : \mathbb{Z}[t] \to \mathbb{Q}$?
102721
Number of elements in the ring $\mathbb Z [i]/\langle 2+2i\rangle$
150204
Isomorphisms between the groups $U(10), U(5)$ and $\mathbb{Z}/4\mathbb{Z}$
124140
Quick way to find the number of the group homomorphisms $\phi:{\bf Z}_3\to{\bf Z}_6$?
27670
Group homomorphisms $\mathbb{Q}\to\mathbb{R}$
39965
Partition of $\mathbb{Z}_8$ into cosets of Ker(θ)
118293
Strategy for determining the number of homomorphisms between two Groups
64048
Describe all ring homomorphisms
109596
Isomorphism from $\mathrm{Aut}(\mathbb{Z}/2\mathbb{Z}\times \mathbb{Z}/2\mathbb{Z})$ to $S_3$
82559
Showing two ring homomorphisms that agree on the integers must agree on the rationals
144105
Ring homomorphism from $\mathbb Z$ to $\mathbb Z$ is always identity or $0$