ring isomorphism question
6121
Quotient ring of Gaussian integers
22604
Can $R \times R$ be isomorphic to $R$ as rings?
149973
Showing the following coordinate rings are not isomorphic
86174
Finding an isomorphism between these two finite fields
64025
Ring homomorphisms from $\Bbb Q$ into a ring
116594
Finite fields are isomorphic
68728
Why does the natural ring homomorphism induce a surjective group homomorphism of units?
126644
Simple module and homomorphisms
6385
Minimal counterexamples of the isomorphism problem for integral group rings
1686
Show that quotient rings are not isomorphic
52088
Isomorphism of an endomorphism ring, how can $R\cong R^2$?
149856
Image of ring homomorphism is a subring
32443
Find the kernel of a ring homomorphism $f(x)\to f(\sqrt 2)$
110808
Isomorphisms preserve cyclic
146341
Finding all ring homomorphisms from a field to itself
40400
Finding an isomorphism between $\mathbb{Z}[i]/(7)$ and $\mathbb{Z}[\sqrt{-2}]/(7)$
5594
Question about the Euclidean ring definition