English

Two extensions of Hilbert's finiteness theorem

Rings and Algebras 2012-12-20 v1 Commutative Algebra Representation Theory

Abstract

Let SS^{\cdot} be a noetherian graded algebra over a commutative kk-algebra AA, where kk is a commutative ring, and assume it is a module over a Lie algebroid gA/k{\mathfrak g}_{A/k}. If SS^\cdot is semi-simple over gA/k{\mathfrak g}_{A/k} we prove that its ring of invariants Sˉ\bar S^{\cdot} is notherian. When gA/k{\mathfrak g}_{A/k} is a solvable Lie algebra over AA we construct noetherian subalgebras of SS^\cdot from subsets of characters of gA/k{\mathfrak g}_{A/k}. We give similar results for noetherian modules over the pair (S,gA/k)(S^{\cdot}, {\mathfrak g}_{A/k}).

Keywords

Cite

@article{arxiv.1212.4790,
  title  = {Two extensions of Hilbert's finiteness theorem},
  author = {Rolf Källström},
  journal= {arXiv preprint arXiv:1212.4790},
  year   = {2012}
}

Comments

4 pages

R2 v1 2026-06-21T22:57:28.338Z