Veronese embedding as ring isomorphism
107520
Krull dimension of $\mathbb{C}[x_1, x_2, x_3, x_4]/\left$
83115
A set of elements in a reduced unity ring
138298
Learning about Grothendieck's Galois Theory.
63192
A chain ring with Krull dimension greater than one
52088
Isomorphism of an endomorphism ring, how can $R\cong R^2$?
67237
Pull back image of maximal ideal under surjective ring homomorphism is maximal
83483
Is there a nice way to classify the ideals of the ring of lower triangular matrices?
45179
When does the isomorphism $G\simeq \ker(\phi)\times \operatorname{im}(\phi)$? hold?
62711
Canonical map $R/(I\cap J)\rightarrow R/I\times _{R/(I+J)} R/J$ is an isomorphism
143429
Kernel of ring homomorphism $k[X,Y] \rightarrow k[t^2, t^3]$
151993
Ring homomorphisms $\mathbb Z[x]\rightarrow \mathbb Q$
158232
Tensor product of a module with an ideal is isomorphic to their standard product
112131
Characterizing all ring homomorphisms $C[0,1]\to\mathbb{R}$.
129476
The trace map in a finite field.
37928
Isomorphism between $D_{2n}/Z(D_{2n})$ and $D_n$
59203
isomorphic planar graph with its complement
130937
Embeddings of finite groups into $\mathrm{GL}_n(\mathbb{Z})$