Let $G$ be a finite group with $n$ elements acting on $k[x_1,\cdots,x_n]$ through the regular representation. Is it true that $G$ is a subgroup (in the sense that there exists an injective group homomorphism) of the automorphism group $Aut(V)$ of the variety $V:=k^n/G$? If so, where can I read a proof for this? Thanks for your help!
2026-03-26 11:18:03.1774523883
Is a finite group a subgroup of the automorphism group of a variety?
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The answer to the question in your title is yes. This follows from the fact that every finite group $G$ is a Galois group of a finite Galois covering $X\rightarrow\mathbb{P}^1_{\mathbb{C}}$, and hence $G\subset\text{Aut}_{\mathbb{C}}(X)$.