Homomorphism of Rings.
46040
Preimage of maximal ideal is maximal (why is this answer wrong?)
91129
Can there be an onto homomorphism from a ring without unity to a ring with unity?
30714
A question on ring homomorphisms and maximal ideals.
75315
How to prove that homomorphism from field to ring is injective or zero?
32172
Homomorphisms of graded modules
140557
Counting ring homomorphisms from $\mathbb{Z}[x,y]/(x^3+y^2-1)$ to $\mathbb{Z_7}$
39576
Quotient ring being isomorphic to the initial ring
18343
Counting homomorphisms between $\Bbb Z$ and $\Bbb Z_n$ and also between $\Bbb Z_n$ and $\Bbb Q$
26661
Ring homomorphisms from $\mathbb{Z}_n$ to $\mathbb{Z}_m$
101064
Showing the triviality of homomorphisms
27728
Question on a homomorphism of a set G.
121244
Homomorphisms and automorphisms on polynomial rings
55900
Is there a ring homomorphism $M_2(\mathbb Z)\to \mathbb Z$?
141984
Find the number of homomorphisms between $\mathbb{Z}_m$ and $\mathbb{Z}_n$
153291
Why a ring homomorphism from a local ring will not map a non-unit to a unit？
3778
If the matrix rings over two Rings of the same size are isomorphic, then the scalar rings are isomorphic
70658
Isomorphism between quotient modules