Alignment Correspondences

Details Alignment Correspondences Alignment Correspondences

2000-11-24

arxiv.org/abs/math/0011213v1

Mathematics

Algebraic Geometry

Scientific paper

We study correspondences of zero-dimensional subschemes of a smooth variety X "aligned" in the same way in inside the appropriate product of Hilbert schemes. We show that such correspondences have etale covering by other such correspondences that are affine bundles over flag bundles on the tangent bundle of X. Moreover, we show that for many such coverings, the closures of the correspondences having these coverings vary so much that there is no compactification of the covering dominating all of these closures.

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