Non-quasi-$F$-split canonical affine fourfolds exist in every characteristic
Algebraic Geometry
2026-03-04 v2
Abstract
We construct canonical -factorial Gorenstein affine fourfolds in every positive characteristic that are not quasi--split.
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Cite
@article{arxiv.2602.14792,
title = {Non-quasi-$F$-split canonical affine fourfolds exist in every characteristic},
author = {Teppei Takamatsu and Shou Yoshikawa},
journal= {arXiv preprint arXiv:2602.14792},
year = {2026}
}
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9 pages