Resolutions of Type $\mathbb{A}$ Quantum Surface Singularities
Rings and Algebras
2025-12-08 v2 Algebraic Geometry
Abstract
Let be a Type quantum Kleinian singularity, which is an example of a noncommutative surface singularity. This singularity is known to have a noncommutative quasi-crepant resolution , which is an "algebraic" resolution of . We construct a category which serves as a "geometric" resolution of by adapting techniques from quiver GIT and show that and are derived equivalent. Furthermore, we show that the intersection arrangement of lines in the exceptional locus of corresponds to a Type Dynkin diagram. This generalises the geometric McKay correspondence for classical Kleinian singularities.
Cite
@article{arxiv.2510.07137,
title = {Resolutions of Type $\mathbb{A}$ Quantum Surface Singularities},
author = {Simon Crawford and Susan J. Sierra},
journal= {arXiv preprint arXiv:2510.07137},
year = {2025}
}