Let $k$ be a 0 characteristic field, and $G$ a reductive group in $GA_2(k)$ (the group of automorphisms of k[x,y] as k-algebra). How is it possible to deduce that $G$ is conjugated to a subgroup of $GL_2(k)$ ?
2026-03-26 09:15:03.1774516503
Linearizable reductive group action.
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