English

Cohen's theorem in tensor triangular geometry

Category Theory 2025-05-22 v1 Algebraic Topology Representation Theory

Abstract

A theorem of Cohen from 1950 states that a commutative ring is Noetherian if and only if every prime ideal is finitely generated. In this note, we establish analogues of this result in tensor triangular geometry. In particular, for an essentially small tensor triangulated category K\mathscr{K} with weakly Noetherian spectrum, we show that every prime ideal in K\mathscr{K} can be generated by finitely many objects if and only if the set of prime ideals of K\mathscr{K} is finite.

Keywords

Cite

@article{arxiv.2505.15786,
  title  = {Cohen's theorem in tensor triangular geometry},
  author = {Tobias Barthel},
  journal= {arXiv preprint arXiv:2505.15786},
  year   = {2025}
}

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R2 v1 2026-07-01T02:29:15.114Z