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Two Counterexamples in the Geometry of Numbers

Number theory · posed by J. W. S. Cassels and Chuanming Zong; Peter Sarnak, formulated by Chiu · disproved

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Statement

The paper gives counterexamples in dimensions eight and nine to two problems: the Cartesian-product problem posed by Cassels for critical determinants and formulated by Zong for lattice packings, and a question raised by Sarnak, formulated as a conjecture by Chiu, on whether height among unit-volume flat tori is minimized by a lattice maximizing its shortest nonzero vector.

Context

Refutes two separate stated problems at once, one of them a question of Sarnak.

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1 attempt

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  • #1

    Attempt 1

    constructionChatGPT 5 + Codex with Nihar Gargava ·
    AI involvement
    ai discovered
    the result was found by a model.
    models
    ChatGPT 5 + Codex
    people
    Nihar Gargava

    The acknowledgements state the counterexamples were found using ChatGPT, and that the final paper is partly the author's own writing and partly written with the help of Codex.

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