Isomorphism of Polynomial Rings
41069
Justifying $\,\Bbb{Z}[i]/\langle 2\rangle\cong \Bbb{Z}[X]/\langle X^2+1,2\rangle\cong \Bbb{F}_2[X]/\langle X^2+1\rangle$
109039
Does this "extension property" for polynomial rings satisfy a universal property?
8587
What is an example of two k-algebras that are isomorphic as rings, but not as k-algebras?
19346
Isomorphism of affine varieties
77820
Roots in a polynomial ring
89313
Maximal ideals of polynomial rings in infinitely many variables
121465
$R[x]$ has a subring isomorphic to $R$.
97608
Showing a Ring of endomorphisms is isomorphic to a Ring
35222
Characterizing units in polynomial rings
120288
Semigroup isomorphism
1026
Ring homomorphism with $\phi(1_R) \neq1_S$
40490
Birational isomorphism $\mathbb{P}^n\times \mathbb{P}^m\to \mathbb{P}^{n+m}$
73652
Exhibiting an isomorphism between two finite fields
140865
Rings' second isomorphism theorem
110808
Isomorphisms preserve cyclic
120035
Pattern in Isomorphisms between $\mathbb Z_m \times \mathbb Z_n$ and $\mathbb Z_{mn}$
34990
Ring homomorphism defined on a field