English

Failure of Boundedness for Generalised Log Canonical Surfaces

Algebraic Geometry 2025-04-10 v1

Abstract

In this paper, we construct counterexamples to the boundedness of generalised log canonical models of surfaces with fixed appropriate invariants, where the underlying varieties can have arbitrary Kodaira dimension. This answers a question of Birkar and the first author.

Keywords

Cite

@article{arxiv.2504.06482,
  title  = {Failure of Boundedness for Generalised Log Canonical Surfaces},
  author = {Christopher Hacon and Xiaowei Jiang},
  journal= {arXiv preprint arXiv:2504.06482},
  year   = {2025}
}

Comments

25 pages. Comments are welcome