Integral points over number fields: a Clemens complex jigsaw puzzle
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2026
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| _version_ | 1866911372463308800 |
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| author | Bernert, Christian Derenthal, Ulrich Ortmann, Judith Wilsch, Florian |
| author_facet | Bernert, Christian Derenthal, Ulrich Ortmann, Judith Wilsch, Florian |
| contents | We prove an asymptotic formula for the number of integral points of bounded log anticanonical height on a singular quartic del Pezzo surface over arbitrary number fields, with respect to the largest admissible boundary divisor. The resulting Clemens complex is more complicated than usual, and leads to particularly interesting effective cone constants, associated with exponentially many polytopes whose volumes appear in the expected formula. Like a jigsaw puzzle, these polytopes fit together to one large polytope. The volume of this polytope appears in the asymptotic formula that we obtain using the universal torsor method via o-minimal structures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_08774 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Integral points over number fields: a Clemens complex jigsaw puzzle Bernert, Christian Derenthal, Ulrich Ortmann, Judith Wilsch, Florian Number Theory Algebraic Geometry 11G35 (11D45, 14G05, 52B20) We prove an asymptotic formula for the number of integral points of bounded log anticanonical height on a singular quartic del Pezzo surface over arbitrary number fields, with respect to the largest admissible boundary divisor. The resulting Clemens complex is more complicated than usual, and leads to particularly interesting effective cone constants, associated with exponentially many polytopes whose volumes appear in the expected formula. Like a jigsaw puzzle, these polytopes fit together to one large polytope. The volume of this polytope appears in the asymptotic formula that we obtain using the universal torsor method via o-minimal structures. |
| title | Integral points over number fields: a Clemens complex jigsaw puzzle |
| topic | Number Theory Algebraic Geometry 11G35 (11D45, 14G05, 52B20) |
| url | https://arxiv.org/abs/2601.08774 |