English

Tensor ideals for quantum groups via minimal tilting complexes

Representation Theory 2022-11-21 v1

Abstract

We use minimal tilting complexes to construct an explicit bijection between the set of thick tensor ideals with the two-out-of-three property in the category of finite-dimensional modules over a quantum group at a root of unity and the set of thick tensor ideals in the subcategory of tilting modules. We also explain why the analogous construction for rational representations of a reductive algebraic group over a field of positive characteristic does not give rise to a bijection.

Keywords

Cite

@article{arxiv.2211.10037,
  title  = {Tensor ideals for quantum groups via minimal tilting complexes},
  author = {Jonathan Gruber},
  journal= {arXiv preprint arXiv:2211.10037},
  year   = {2022}
}

Comments

7 pages

R2 v1 2026-06-28T06:11:02.377Z