English

Non-commutative resolutions of linearly reductive quotient singularities

Algebraic Geometry 2024-10-10 v2 Commutative Algebra Rings and Algebras

Abstract

We prove existence of non-commutative crepant resolutions (in the sense of van den Bergh) of quotient singularities by finite and linearly reductive group schemes in positive characteristic. In dimension two, we relate these to resolutions of singularities provided by G-Hilbert schemes and F-blowups. As an application, we establish and recover results concerning resolutions for toric singularities, as well as canonical, log terminal, and F-regular singularities in dimension 2.

Keywords

Cite

@article{arxiv.2304.14711,
  title  = {Non-commutative resolutions of linearly reductive quotient singularities},
  author = {Christian Liedtke and Takehiko Yasuda},
  journal= {arXiv preprint arXiv:2304.14711},
  year   = {2024}
}

Comments

20 pages, minor changes, comments welcome!