English

ACM tilting bundles on a Geigle-Lenzing projective plane of type $(2,2,2,p)$

Representation Theory 2025-06-17 v1 Algebraic Geometry

Abstract

Let X\mathbb{X} be a Geigle-Lenzing projective plane of type (2,2,2,p)(2,2,2,p) and cohX\mathsf{coh} \mathbb{X} the category of coherent sheaves on X\mathbb{X}. This paper is devoted to study ACM tilting bundles over X\mathbb{X}, that is, tilting objects in the derived category Db(cohX)\mathsf{D}^{\rm b}(\mathsf{coh} \, \mathbb{X}) that are also ACM bundles. We show that a tilting bundle consisting of line bundles is the 22-canonical tilting bundle up to degree shift. We also provide a program to construct ACM tilting bundles, which give a rich source of (almost) 22-representation infinite algebras. As an application, we give a classification result of ACM tilting bundles.

Keywords

Cite

@article{arxiv.2506.13376,
  title  = {ACM tilting bundles on a Geigle-Lenzing projective plane of type $(2,2,2,p)$},
  author = {Jianmin Chen and Shiquan Ruan and Weikang Weng},
  journal= {arXiv preprint arXiv:2506.13376},
  year   = {2025}
}

Comments

28 pages, comments welcome!