Intersection theory on linear subvarieties of toric varieties

Intersection theory on linear subvarieties of toric varieties
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复曲面簇线性亚簇的交集理论

DOI:
10.1007/s13348-014-0129-4
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发表时间:
2013
影响因子:
1.1
通讯作者:
Andreas Gross
Andreas Gross
中科院分区:
数学2区
文献类型:
--
作者:
Andreas Gross

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我们给出了光滑环面簇中环面的线性子簇Z的紧化的上同调环A^*(\overline{Z})A(Z <$)的完整刻画,光滑环面簇的扇形\Sigma {\displaystyle\Sigma}由Z的热带化支撑。事实证明,$$\overline{Z}$$Z <$的余圈正则地对应于$$\Sigma $$Z上的Minkowski权,并且杯积由热带拟阵簇$${\mathrm{Trop}}(Z)$$Trop(Z)上的交集积描述。
We give a complete description of the cohomology ring $$A^*(\overline{Z})$$A∗(Z¯) of a compactification of a linear subvariety $$Z$$Z of a torus in a smooth toric variety whose fan $$\Sigma $$Σ is supported on the tropicalization of $$Z$$Z. It turns out that cocycles on $$\overline{Z}$$Z¯ canonically correspond to Minkowski weights on $$\Sigma $$Σ and that the cup product is described by the intersection product on the tropical matroid variety $${{\mathrm{Trop}}}(Z)$$Trop(Z).
热带拟阵品种和周期交叉点的对角线
DOI: 10.1007/s13348-012-0072-1
发表时间: 2013
影响因子: 1.1
作者:
G. François;J. Rau
通讯作者: J. Rau