English

A question on klt type varieties of Han and Jiang

Algebraic Geometry 2026-05-22 v1

Abstract

We prove that being of klt type is not an open condition in flat families of varieties. This answers a question of Han and Jiang. The construction in this paper substantially uses generative AI: the general idea for the counterexample was suggested by ChatGPT Pro 5.5, and the explicit example was found and proved by the Rethlas system.

Keywords

Cite

@article{arxiv.2605.22250,
  title  = {A question on klt type varieties of Han and Jiang},
  author = {Jihao Liu},
  journal= {arXiv preprint arXiv:2605.22250},
  year   = {2026}
}

Comments

4 pages. AI generated, human verified