Elliptic singularities and threefold flops in positive characteristic
Algebraic Geometry
2025-10-22 v4
Abstract
Let be a smooth threefold over an algebraically closed field of positive characteristic. We prove that an arbitrary flop of is smooth. To this end, we study Gorenstein curves of genus one and two-dimensional elliptic singularities defined over imperfect fields.
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Cite
@article{arxiv.2308.08118,
title = {Elliptic singularities and threefold flops in positive characteristic},
author = {Hiromu Tanaka},
journal= {arXiv preprint arXiv:2308.08118},
year = {2025}
}
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51 pages