Is an injective ring morphism always a monomorphism?
111239
Are monomorphisms of rings injective?
50212
$R/Ra$ is an injective module over itself
67237
Pull back image of maximal ideal under surjective ring homomorphism is maximal
75315
How to prove that homomorphism from field to ring is injective or zero?
95086
Homeomorphism is bijective
11202
If $g \circ f$ is injective, so is $g$
118073
Is the ring $m\mathbb{Z}$ isomorphic to the ring $n\mathbb{Z}$?
147667
Polynomial ring isomorphisms
52088
Isomorphism of an endomorphism ring, how can $R\cong R^2$?
129858
"Almost" ring homomorphism
6385
Minimal counterexamples of the isomorphism problem for integral group rings
54360
Injective implies trivial kernel.
121945
Monomorphisms and Epimorphisms in the category of small categories
144122
A problem about an $R$-module that is both injective and projective.
149856
Image of ring homomorphism is a subring
115409
Are MAGMA-epimorphisms sujective?
126644
Simple module and homomorphisms