On an example of Aspinwall, Morrison, and Szendrői
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
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2024
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| _version_ | 1866910545332928512 |
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| author | Addington, Nicolas Tighe, Benjamin |
| author_facet | Addington, Nicolas Tighe, Benjamin |
| contents | We study the cohomology of a 1-parameter family Y_t of Calabi-Yau 3-folds introduced by Aspinwall and Morrison, related to the mirror quintic family. Szendrői proved that Y_t, Y_{xi t}, ..., Y_{xi^4 t}, where xi is a fifth root of unity, have the same rational Hodge structure but are not isomorphic, and conjectured that they are not birational or even derived equivalent. We confirm this by proving that their integral Hodge structures are different, and discuss how this fits with known Torelli-type theorems and counterexamples. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_11176 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | On an example of Aspinwall, Morrison, and Szendrői Addington, Nicolas Tighe, Benjamin Algebraic Geometry We study the cohomology of a 1-parameter family Y_t of Calabi-Yau 3-folds introduced by Aspinwall and Morrison, related to the mirror quintic family. Szendrői proved that Y_t, Y_{xi t}, ..., Y_{xi^4 t}, where xi is a fifth root of unity, have the same rational Hodge structure but are not isomorphic, and conjectured that they are not birational or even derived equivalent. We confirm this by proving that their integral Hodge structures are different, and discuss how this fits with known Torelli-type theorems and counterexamples. |
| title | On an example of Aspinwall, Morrison, and Szendrői |
| topic | Algebraic Geometry |
| url | https://arxiv.org/abs/2407.11176 |