Noetherianity of polynomial rings up to group actions
Representation Theory
2025-08-25 v2 Commutative Algebra
Rings and Algebras
Abstract
Let be a commutative Noetherian ring, and the polynomial ring whose indeterminates are parameterized by elements in a set . We show that is Noetherian up to highly homogenous actions of groups. In particular, there is a special linear order on infinite such that is Noetherian up to actions of , 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-R\"{o}mer, and a classification of highly homogenous groups by Cameron.
Cite
@article{arxiv.2502.14306,
title = {Noetherianity of polynomial rings up to group actions},
author = {Liping Li and Yinhe Peng and Zhengjun Yuan},
journal= {arXiv preprint arXiv:2502.14306},
year = {2025}
}
Comments
A major revision following reviewer's suggestions