$G$ acts as a group of automorphisms on $A$, $\textrm{Spec}(A^G)=G \backslash \textrm{Spec}(A)$
130745
Action of finite group of automorphisms on Spec A
67199
Isomorphism $H_n(D^n, S^{n - 1};A)$ and $A$
137233
$f$ is irreducible $\iff$ $G$ act transitively on the roots
111168
Automorphisms of a finite non-abelian group
114811
Characteristic subgroups and automorphisms
139100
A question on the group algebra $k[G]$ of a finite abelian group
39866
Automorphism group of the quaternion group
148881
Aut(GxH) isomorphic to Aut(G)xAut(H)
37414
Question on Groups $G=\langle x,y|x^4=y^4=e,xyxy^{-1}=e\rangle$
46863
Show that $g$ is injective
132127
Proving a direct product of groups is a group
49527
Prove that $a$ commutes with each of its conjugates in $G$ iff $a$ belongs to an abelian normal subgroup of $G$.
90616
When is mapping $g$ to $g^{-1}$ a group homomorphism?
117897
A homomorphism induces a continuous map from ${\rm Spec}(A') \to {\rm Spec}(A)$.
135710
Cyclic Automorphism group
62035
Order of automorphism group of cyclic group
121244
Homomorphisms and automorphisms on polynomial rings