摘要翻译:
研究了在任意偏振态下,在Fourier变换下稳定的abelian簇$A$的Chow环$\ch^*(A)_{{\BBB Q}}$中的子带。我们证明,通过取维数为$\leq1$1类的Pontryagin积,可以得到这样一个子环。我们还证明了如何在$\ch^*(A)_{{\bbb Q}}$中构造有限维Fourier稳定的子带。另一个结果是关于$\ch^*(A)_{\bbb Q}}$上的Pontryagin乘积与通常乘积之间的关系。证明了通常带圈乘积的算子是关于Pontryagin乘积的微分算子,并根据$\ch^*(a)_{{\bbb Q}}$的Beauville分解计算了它的阶。
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英文标题:
《Fourier-stable subrings in the Chow rings of abelian varieties》
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作者:
Alexander Polishchuk
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最新提交年份:
2008
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分类信息:
一级分类:Mathematics 数学
二级分类:Algebraic Geometry 代数几何
分类描述:Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology
代数簇,叠,束,格式,模空间,复几何,量子上同调
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英文摘要:
We study subrings in the Chow ring $\CH^*(A)_{{\Bbb Q}}$ of an abelian variety $A$, stable under the Fourier transform with respect to an arbitrary polarization. We prove that by taking Pontryagin products of classes of dimension $\leq 1$ one gets such a subring. We also show how to construct finite-dimensional Fourier-stable subrings in $\CH^*(A)_{{\Bbb Q}}$. Another result concerns the relation between the Pontryagin product and the usual product on the $\CH^*(A)_{{\Bbb Q}}$. We prove that the operator of the usual product with a cycle is a differential operator with respect to the Pontryagin product and compute its order in terms of the Beauville's decomposition of $\CH^*(A)_{{\Bbb Q}}$.
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PDF链接:
https://arxiv.org/pdf/0705.0772