Aspects of enumerative geometry with quadratic forms
Algebraic Geometry
2021-04-07 v7
Abstract
We develop various aspects of classical enumerative geometry, including Euler characteristics and formulas for counting degenerate fibres in a pencil, with the classical numerical formulas being replaced by identitites in the Grothendieck-Witt group of quadratic forms with coefficients in the base-field.
Cite
@article{arxiv.1703.03049,
title = {Aspects of enumerative geometry with quadratic forms},
author = {Marc Levine},
journal= {arXiv preprint arXiv:1703.03049},
year = {2021}
}
Comments
The paper has appeared in Documenta. This version corrects a few typos