Ring Theory - Isomorphism
137011
showing $\psi: R\to \mathbb C$ is ring isomorphism.
26661
Ring homomorphisms from $\mathbb{Z}_n$ to $\mathbb{Z}_m$
29359
Localisation isomorphic to a quotient of polynomial ring
32302
Neukirch’s Number Theory – why is $ℂ \otimes_ℚ K → K_ℂ,~z \otimes a ↦ (j(z)a)_τ$ an isomorphism?
151993
Ring homomorphisms $\mathbb Z[x]\rightarrow \mathbb Q$
110808
Isomorphisms preserve cyclic
22604
Can $R \times R$ be isomorphic to $R$ as rings?
77757
Infer the second isomorphism theorem from the first one
127491
Isometric isomorphism between $R^2$ and $R$
68728
Why does the natural ring homomorphism induce a surjective group homomorphism of units?
73689
A question about the equivalence relation on the localization of a ring.
118073
Is the ring $m\mathbb{Z}$ isomorphic to the ring $n\mathbb{Z}$?
55393
Existence of a group isomorphism between $(\mathbb K,+)$ and $(\mathbb K^\times,\cdot)$
116594
Finite fields are isomorphic
121244
Homomorphisms and automorphisms on polynomial rings
146334
Are there fields $F$ such that the rings $F[x]/(x^2)$ and $F[x]/(x^2-1)$ are isomorphic?
115663
Proving an isomorphism using the isomorphism theorems