The Milnor fibre of the Pfaffian and the Hilbert scheme of four points on C^3
The Milnor fibre of the Pfaffian and the Hilbert scheme of four points on C^3
复制标题
C^3 上的普法夫米尔诺纤维和四点希尔伯特方案
DOI:
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发表时间:
2009
期刊:
影响因子:
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通讯作者:
Balázs Szendrői
中科院分区:
文献类型:
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作者:
A. Dimca;Balázs Szendrői
We study a natural Hodge module on the Hilbert scheme of four points on affine three-space, which categorifies the Donaldson--Thomas invariant of the Hilbert scheme. We determine the weight filtration on the Hodge module explicitly in terms of intersection cohomology complexes, and compute the E-polynomial of its cohomology. The computations make essential use of a description of the singularity of the Hilbert scheme as the degeneracy locus of the Pfaffian function.