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Han and Jiang's Question on klt Type in Flat Families

Geometry & topology · posed by Jingjun Han, Chen Jiang · disproved

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Statement

Han and Jiang asked whether being of klt type is an open condition in flat families of varieties. It is not.

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No person has examined this. Nothing here has been checked at all. say whether it holds →

  1. construction · #1

    ChatGPT Pro 5.5 and Rethlas, with Jihao Liu

    The record says a model found this and names the people who worked on it. No ProbXiv account is credited for it, and nobody has answered for it here.

    AI involvement
    ai discovered
    — the result was found by a model.

    The division of labour is stated precisely, which is rare: ChatGPT Pro 5.5 suggested the general idea for the counterexample, and the Rethlas system found the explicit example and proved it. The author describes the construction as substantially using generative AI.

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