Noetherianity of polynomial rings up to group actions
Noetherianity of polynomial rings up to group actions
Let $k$ be a commutative Noetherian ring, and $k[S]$ the polynomial ring whose indeterminates are parameterized by elements in a set $S$. We show that $k[S]$ is Noetherian up to highly homogenous actions of groups. In particular, there is a special linear order $\leqslant$ on infinite $S$ such that $k[S]$ is Noetherian up to actions of $\mathrm{Aut}(S, \leqslant)$, and the existence of such a linear order for every infinite set is equivalent to the axiom of choice. These Noetherian results are proved via a sheaf theoretic approach based on Artin's theorem, the work of Nagel-Römer, and a classification of highly homogenous groups by Cameron.
Liping Li、Yinhe Peng、Zhengjun Yuan
数学
Liping Li,Yinhe Peng,Zhengjun Yuan.Noetherianity of polynomial rings up to group actions[EB/OL].(2025-08-22)[2025-09-05].https://arxiv.org/abs/2502.14306.点此复制
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