摘要翻译:
利用相关簇的部分紧化上的超平面截面标志,描述了可构造复形中系数拟射影簇的紧支上同调群上的标准滤子和Leray滤子。在附录中,我们讨论了代数簇上可构造束的基变映射及其在Beilinson证明Lefschetz超平面定理中的作用。
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英文标题:
《The standard filtration on cohomology with compact supports with an
appendix on the base change map and the Lefschetz hyperplane theorem》
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作者:
Mark Andrea A. de Cataldo
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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:
We describe the standard and Leray filtrations on the cohomology groups with compact supports of a quasi projective variety with coefficients in a constructible complex using flags of hyperplane sections on a partial compactification of a related variety. One of the key ingredients of the proof is the Lefschetz hyperplane theorem for perverse sheaves and, in an appendix, we discuss the base change maps for constructible sheaves on algebraic varieties and their role in a proof, due to Beilinson, of the Lefschetz hyperplane theorem.
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PDF链接:
https://arxiv.org/pdf/0901.0660