Why does a ring homomorphism induce a continuous map between spectra?
117897
A homomorphism induces a continuous map from ${\rm Spec}(A') \to {\rm Spec}(A)$.
157597
Homeomorphism between $\mathbb{Q}$ and $\mathbb{Q}(>0)$, and $\mathbb{Q}(\ge 0)$
140557
Counting ring homomorphisms from $\mathbb{Z}[x,y]/(x^3+y^2-1)$ to $\mathbb{Z_7}$
34234
Kernel of injective group homomorphism
97009
Image of ring homomorphism $\phi : \mathbb{Z}[t] \to \mathbb{Q}$?
101064
Showing the triviality of homomorphisms
111743
In a ring homomorphism we always have $f(1)=1$?
32428
Group homomorphisms and which of the following statements are true (NBHM-$2014$)
121945
Monomorphisms and Epimorphisms in the category of small categories
64025
Ring homomorphisms from $\Bbb Q$ into a ring
51695
Finding all homomorphisms between $\mathbb{Z}/m\mathbb{Z}$ and $\mathbb{Z}/n\mathbb{Z}$
18343
Counting homomorphisms between $\Bbb Z$ and $\Bbb Z_n$ and also between $\Bbb Z_n$ and $\Bbb Q$
106347
Why is the image of a homomorphism a subgroup of the codomain?
84114
Does there exist a surjective homomorphism from $(\mathbb R,+)$ to $(\mathbb Q,+)$ ?
126930
Finding all group homomorphisms of $S_n\to\mathbb{C}^*$ and $A_n\to\mathbb{C}^*$
38878
Why are eigenfunctions which correspond to discrete/continuous eigenvalue spectra guaranteed to be normalizable/non-normalizable?
143884
A non-noetherian ring with noetherian spectrum