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arXiv math/0202173math.AG
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关于代数曲面的K_1和K_2

On K_1 and K_2 of algebraic surfaces

Stefan Müller-Stach, Shuji Saito, Alberto Collino

摘要:

研究了特征为0的域上光滑射影代数曲面的高阶Chow群$CH^2(X,1)$和$CH^3(X,2)$。当循环支持在正规交叉因子上时,我们利用所谓的高阶正规函数和高阶无穷小不变量建立了一个理论框架来研究它们。然后研究了它们在射影三维空间中的超曲面上的结构。这会导致结果消失或分解。另一方面,我们发现这些群在4度和5度的例子,其结果是一个高度不可分解的(因此是大的)阿贝尔群。部分例子是由于阿尔贝托Collino。

英文摘要:

We study the higher Chow groups $CH^2(X,1)$ and $CH^3(X,2)$ of smooth, projective algebraic surfaces over a field of char 0. We develop a theoretical framework to study them by using so-called higher normal functions and higher infinitesimal invariants when the cycles are supported on normal crossing divisors. Then we investigate their structure on hypersurfaces in projective 3-space. This leads to vanishing or decomposbility results. On the other hand we find examples of these groups in degrees 4 and 5 where the result is a highly indecomposably (hence big) abelian group. Part of the examples are due to Alberto Collino.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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