On the universal $CH_0$ group of cubic hypersurfaces
On the universal $CH_0$ group of cubic hypersurfaces
复制标题
在通用立方超曲面 $CH_0$ 组上
DOI:
--
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
C. Voisin
中科院分区:
文献类型:
--
作者:
C. Voisin
We study the existence of a Chow-theoretic decomposition of the diagonal of a smooth cubic hypersurface, or equivalently, the universal triviality of its ${
m CH}_0$-group. We prove that for odd dimensional cubic hypersurfaces or for cubic fourfolds, this is equivalent to the existence of a cohomological decomposition of the diagonal, and we translate geometrically this last condition. For cubic threefolds $X$, this turns out to be equivalent to the algebraicity of the minimal class $ heta^4/4!$ of the intermediate Jacobian $J(X)$. In dimension $4$, we show that a special cubic fourfold with discriminant not divisible by $4$ has universally trivial ${
m CH}_0$ group.
DOI:
10.1017/fms.2016.5
发表时间:
2016
期刊:
Sigma
影响因子:
--
作者:
TOTARO, BURT
通讯作者:
TOTARO, BURT
影响因子:
2.5
作者:
N. Addington;Richard P. Thomas
通讯作者:
N. Addington;Richard P. Thomas