Question conncerning how to show ring isomorphism
1315
Let $R$ be a ring. Define a circle composition ◦ in R by $a ◦ b =a+b-ab$, $a, b ∈ R$.
2709
How to show that every Boolean ring is commutative?
6171
Isomorphism between $\Bbb{Z}[\sqrt{d}]$ and a quotient of $\Bbb{Z}[X].$
111104
Ring theory notation question
146341
Finding all ring homomorphisms from a field to itself
93017
Isomorphism between $\Bbb R$ and $\Bbb R(X)$?
32443
Find the kernel of a ring homomorphism $f(x)\to f(\sqrt 2)$
94747
Show that the rings $2\mathbb{Z}$ and $3\mathbb{Z}$ are not isomorphic.
75315
How to prove that homomorphism from field to ring is injective or zero?
26644
Does this give a localization of a ring?
82559
Showing two ring homomorphisms that agree on the integers must agree on the rationals
97608
Showing a Ring of endomorphisms is isomorphic to a Ring
60760
Ring homomorphism and characteristic
105887
Ring and Subring with different Identities
144105
Ring homomorphism from $\mathbb Z$ to $\mathbb Z$ is always identity or $0$
34990
Ring homomorphism defined on a field
93169
Show that $(\mathbb Z[x],+)$ and $(\mathbb Q_{>0},\cdot)$ are isomorphic groups