Kernel of the ring homomorphism $\phi\colon\mathbb{C}[x, y, z]\to\mathbb{C}[t]$ defined by $\phi(x) = t$, $\phi(y) = t^2$, $\phi(z) = t^3$
103924
Kernel of a substitution map
126644
Simple module and homomorphisms
112131
Characterizing all ring homomorphisms $C[0,1]\to\mathbb{R}$.
89415
Number of homomorphisms from $(\mathbb Q^+ , \,\cdot\,)$ to $(\mathbb Z_n , +)$
88199
The commutator subgroup of a quotient in terms of the commutator subgroup and the kernel
129858
"Almost" ring homomorphism
26661
Ring homomorphisms from $\mathbb{Z}_n$ to $\mathbb{Z}_m$
28108
Proving the kernel is a normal subgroup.
5906
All group homomorphism from $ \mathbb{Z} _m $ to $\mathbb{Z}_n $
61491
Complex Ring Isomorphism
109596
Isomorphism from $\mathrm{Aut}(\mathbb{Z}/2\mathbb{Z}\times \mathbb{Z}/2\mathbb{Z})$ to $S_3$
64048
Describe all ring homomorphisms
75315
How to prove that homomorphism from field to ring is injective or zero?
61334
Application of Main Homomorphism Theorem
144105
Ring homomorphism from $\mathbb Z$ to $\mathbb Z$ is always identity or $0$
130081
Show that $A_n$ is the kernel of a group homomorphism of $S_n \rightarrow \{−1,1\}$.
90192
Kernel and Image of a group homomorphism