A topological construction of the weight filtration

A topological construction of the weight filtration
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权重过滤的拓扑结构

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发表时间:
2010
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通讯作者:
L. Migliorini
L. Migliorini
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作者:
Fouad El Zein;D. Le;L. Migliorini

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让$${j:X setminus Y,longrightarrow,X}$$是Cartier因子Y的补在复代数簇X中的嵌入,设$${mathbb K}$是XY上的反常层。借助Verdier在Analyse et Topologie sur les espaces singuliers vol. II,III,Astérisque 101-102:332-364 [13]中引入的特化函子,我们在反常复形$${Rj_{*}mathbb K}$$上定义了一个拓扑原点的滤子W,当$${mathbb K}$$是一个局部系统时,它应该扮演权重滤子的角色。
Let $${j: X setminus Y,longrightarrow,X}$$ be the embedding of the complement of a Cartier divisor Y in a complex algebraic variety X, and let $${mathbb K}$$ be a perverse sheaf on X Y. With the aid of the specialization functor introduced by Verdier in Analyse et Topologie sur les espaces singuliers vol. II, III, Astérisque 101–102:332–364 [13], we define a filtration W of topological origin on the perverse complex $${Rj_{*}mathbb K}$$ which should play the role of the weight filtration when $${mathbb K}$$ is a local system underlying a polarised variation of Hodge structures.