具有奇点细胞解法的品种动机

Bruno Stonek
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引用次数: 0

摘要

如果存在一个奇点的解析 $\widetilde X\to X$,使得它的奇异点以及 $\widetilde X$ 和 $X$ 的奇异点都承认蜂窝分解,那么复 variety $X$ 就承认蜂窝分解。在一些温和的条件下,我们用$X$的Borel--Moore同源性来具体描述具有紧凑支持的动机。我们举了很多例子,包括有理投影曲线和二维与三维的多子。
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The motive of a variety with cellular resolution of singularities
A complex variety $X$ admits a \emph{cellular resolution of singularities} if there exists a resolution of singularities $\widetilde X\to X$ such that its exceptional locus as well as $\widetilde X$ and the singular locus of $X$ admit a cellular decomposition. We give a concrete description of the motive with compact support of $X$ in terms of its Borel--Moore homology, under some mild conditions. We give many examples, including rational projective curves and toric varieties of dimension two and three.
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