# On quadratically enriched excess and residual intersections

@inproceedings{Bachmann2021OnQE, title={On quadratically enriched excess and residual intersections}, author={Tom Bachmann and Kirsten Wickelgren}, year={2021} }

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 Wittvalued Euler number of an almost complete intersection. We give example computations of quadratically enriched excess and residual intersections.

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