説明
<jats:title>Abstract</jats:title><jats:p>We establish two results on three-dimensional del Pezzo fibrations in positive characteristic. First, we give an explicit bound for torsion index of relatively torsion line bundles. Second, we show the existence of purely inseparable sections with explicit bounded degree. To prove these results, we study log del Pezzo surfaces defined over imperfect fields.</jats:p>
収録刊行物
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- Journal of the Institute of Mathematics of Jussieu
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Journal of the Institute of Mathematics of Jussieu 21 (1), 197-239, 2020-03-30
Cambridge University Press (CUP)
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詳細情報 詳細情報について
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- CRID
- 1360579820089441408
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- ISSN
- 14753030
- 14747480
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- データソース種別
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- Crossref
- KAKEN