On quadratically enriched excess and residual intersections
Algebraic Geometry
2023-07-06 v2 Algebraic Topology
K-Theory and Homology
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.
Keywords
Cite
@article{arxiv.2112.05960,
title = {On quadratically enriched excess and residual intersections},
author = {Tom Bachmann and Kirsten Wickelgren},
journal= {arXiv preprint arXiv:2112.05960},
year = {2023}
}
Comments
32 pages. Accepted for publication in Journal f\"ur die reine und angewandte Mathematik (Crelle's Journal)