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arXiv · 2112.05960

On quadratically enriched excess and residual intersections

Tom Bachmann·Kirsten Wickelgren
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Abstract

We use recent duality results of Eisenbud--Ulrich to give tools to study quadratically enriched residual intersections when there is no excess bundle. We use this to prove a formula for the Witt-valued Euler number of an almost complete intersection. We give example computations of quadratically enriched excess and residual intersections.

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Tom Bachmann, Kirsten Wickelgren. 2023-07-04. On quadratically enriched excess and residual intersections. https://arxiv.org/abs/2112.05960

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