Group homomorphisms from $\mathbb{C}^\ast$ to $ \mathbb{Z}$
94090
How to show that for any abelian group $G$, $\text{Hom}(\mathbb{Z},G)$ is isomorphic to $G$
18343
Counting homomorphisms between $\Bbb Z$ and $\Bbb Z_n$ and also between $\Bbb Z_n$ and $\Bbb Q$
121034
Follow-up to question: Aut(G) for G = Klein 4-group is isomorphic to $S_3$
51695
Finding all homomorphisms between $\mathbb{Z}/m\mathbb{Z}$ and $\mathbb{Z}/n\mathbb{Z}$
152306
Finding homomorphisms from $\mathbb Z_{12}$ to $\mathbb Z_{6}$.
90616
When is mapping $g$ to $g^{-1}$ a group homomorphism?
32428
Group homomorphisms and which of the following statements are true (NBHM-$2014$)
4648
Proving that $\mathbb{Z}_m\oplus \mathbb{Z}_n \cong \mathbb{Z}_d\oplus \mathbb{Z}_l $ as groups, where $l=\mathrm{lcm}(m,n)$ and $d=\gcd(m,n)$
88930
Homomorphism between free groups
39866
Automorphism group of the quaternion group
34599
Number of ring homomorphisms from $\mathbb Z_{12}$ to $\mathbb Z_{28}$.
144105
Ring homomorphism from $\mathbb Z$ to $\mathbb Z$ is always identity or $0$
27670
Group homomorphisms $\mathbb{Q}\to\mathbb{R}$
40400
Finding an isomorphism between $\mathbb{Z}[i]/(7)$ and $\mathbb{Z}[\sqrt{-2}]/(7)$
86823
proof verification: If $f:G \rightarrow H$ is group homomorphism, and $H$ is abelian, then $G$ is abelian
143451
Homomorphism from $(\Bbb Q,+)$ to a finite group
105103
Automorphism from $\Bbb Q$ to $\Bbb Q$