Kernel of ring homomorphism $k[X,Y] \rightarrow k[t^2, t^3]$
23099
Verifying that the ideal $(x^3-y^2)$ is prime
85768
The function $f:G \rightarrow G$ defined by $f(x)=x^2$ is a homomorphism iff G is abelian.
40678
Image of an ideal under a surjective ring homomorphism is an ideal
30401
Determining the structure of the quotient ring $\mathbb{Z}[x]/(x^2+3,p)$
154847
homomorphism from $S_3$ to $\mathbb Z/3\mathbb Z$
27670
Group homomorphisms $\mathbb{Q}\to\mathbb{R}$
97605
Let $f$ be a surjective homomorphism. Prove that $\ker(f)$ is a maximal ideal
157378
On an injective ring homomorphism from the ring of continuous functions to the ring of differentiable functions
26661
Ring homomorphisms from $\mathbb{Z}_n$ to $\mathbb{Z}_m$
1719
Ideals in the ring of Gaussian integers
44396
Noetherian Ring under a Homomorphism / homomorphic function / map
6121
Quotient ring of Gaussian integers
38571
Localization of a total quotient ring of a reduced ring
57732
Rings of fractions and homomorphisms
82559
Showing two ring homomorphisms that agree on the integers must agree on the rationals
156858
Kernel of powers of a normal operator
140557
Counting ring homomorphisms from $\mathbb{Z}[x,y]/(x^3+y^2-1)$ to $\mathbb{Z_7}$