The combinatorial part of the cohomology of a singular variety

Donu Arapura, Parsa Bakhtary, Jarosław Włodarczyk

ArXiv.org · 2009 · 13 citations · 3 references

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Abstract

We study the first step of the weight filtration on the cohomology of a proper complex algebraic variety, which we call the combinatorial part. We obtain a natural upper bound on its size, which gives rather strong information about the topology of rational singularities.

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