Cylinder maps of algebraic cycles on cubic hypersurfaces
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arXiv
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| Format: | Preprint |
| Published: |
2018
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| _version_ | 1866918147513122816 |
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| author | Lyu, Renjie |
| author_facet | Lyu, Renjie |
| contents | Let \(X\subset \mathbb{P}^{n+1}\) be a smooth cubic hypersurface, and let \(F(X)\) be the variety of lines on \(X\). We prove the surjectivity of the cylinder maps on the Chow groups of \(F(X)\) and \(X\) if \(X\) contains a one-cycle of degree \(1\). Mongardi and Ottem previously proved the integral Hodge conjecture for curve classes on hyperkähler manifolds. Using the cylinder maps, we provide an alternative proof for the \(F(X)\) of a smooth complex cubic fourfold \(X\), which is a special hyperkähler fourfold. In addition, we confirm the integral Tate conjecture for \(F(X)\) of a smooth cubic fourfold \(X\) over a finitely generated field. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1810_12394 |
| institution | arXiv |
| publishDate | 2018 |
| record_format | arxiv |
| spellingShingle | Cylinder maps of algebraic cycles on cubic hypersurfaces Lyu, Renjie Algebraic Geometry 14C15, 14C25, 14C30, 14J42 Let \(X\subset \mathbb{P}^{n+1}\) be a smooth cubic hypersurface, and let \(F(X)\) be the variety of lines on \(X\). We prove the surjectivity of the cylinder maps on the Chow groups of \(F(X)\) and \(X\) if \(X\) contains a one-cycle of degree \(1\). Mongardi and Ottem previously proved the integral Hodge conjecture for curve classes on hyperkähler manifolds. Using the cylinder maps, we provide an alternative proof for the \(F(X)\) of a smooth complex cubic fourfold \(X\), which is a special hyperkähler fourfold. In addition, we confirm the integral Tate conjecture for \(F(X)\) of a smooth cubic fourfold \(X\) over a finitely generated field. |
| title | Cylinder maps of algebraic cycles on cubic hypersurfaces |
| topic | Algebraic Geometry 14C15, 14C25, 14C30, 14J42 |
| url | https://arxiv.org/abs/1810.12394 |