Lines on cubic surfaces and Witt invariants
Algebraic Geometry
2020-08-12 v4 Group Theory
Number Theory
Representation Theory
Abstract
The aim of this note is to give a formula expressing the trace form associated with the 27 lines of a cubic surface.
Keywords
Cite
@article{arxiv.1909.05312,
title = {Lines on cubic surfaces and Witt invariants},
author = {Eva Bayer-Fluckiger and Jean-Pierre Serre},
journal= {arXiv preprint arXiv:1909.05312},
year = {2020}
}
Comments
Added an appendix giving a formula for the Stiefel-Whitney classes of any linear representation of G in terms of four basic invariants. Minor corrections