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Incidence stratifications on Hilbert schemes of smooth surfaces, and an application to Poisson structures
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https://doi.org/10.1142/s0129167x16500063Abstract
Given a smooth curve on a smooth surface, the Hilbert scheme of points on the surface is stratified according to the length of the intersection with the curve. The strata are highly singular. We show that this stratification admits a natural log-resolution, namely the stratified blowup. As a consequence, the induced Poisson structure on the Hilbert scheme of a Poisson surface has unobstructed deformations.
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