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arXiv · 2602.14792

Non-quasi-$F$-split canonical affine fourfolds exist in every characteristic

Teppei Takamatsu·Shou Yoshikawa
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Abstract

We construct canonical $\mathbb{Q}$-factorial Gorenstein affine fourfolds in every positive characteristic that are not quasi-$F$-split.

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Teppei Takamatsu, Shou Yoshikawa. 2026-02-16. Non-quasi-$F$-split canonical affine fourfolds exist in every characteristic. https://arxiv.org/abs/2602.14792

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