摘要翻译:
设$x$是具有Gorenstein商奇点的复射影代数簇,$\x$是以$x$为粗模空间的光滑Deligne-Mumford栈。我们证明了CSM类$C^{SM}(X)$与惯性堆栈$I\X$的总Chern类$C(T_{I\X})$的pushforward到$X$是一致的。我们还表明,$X$的stringy Chern类$C_{str}(X)$无论何时定义,都与双惯性堆栈$II\X$的总Chern类$C(T_{II\X})$的前推到$X$一致。导出了有关Stringy/Orbifold Hodge数的一些结果。
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英文标题:
《Chern classes of Deligne-Mumford stacks and their coarse moduli spaces》
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作者:
Hsian-Hua Tseng
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最新提交年份:
2009
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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:
Let $X$ be a complex projective algebraic variety with Gorenstein quotient singularities and $\X$ a smooth Deligne-Mumford stack having $X$ as its coarse moduli space. We show that the CSM class $c^{SM}(X)$ coincides with the pushforward to $X$ of the total Chern class $c(T_{I\X})$ of the inertia stack $I\X$. We also show that the stringy Chern class $c_{str}(X)$ of $X$, whenever is defined, coincides with the pushforward to $X$ of the total Chern class $c(T_{II\X})$ of the double inertia stack $II\X$. Some consequences concerning stringy/orbifold Hodge numbers are deduced.
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PDF链接:
https://arxiv.org/pdf/0709.0034