The classifying topos of a group scheme and invariants of symmetric bundles
Langue
en
Article de revue
Ce document a été publié dans
Proceedings of the London Mathematical Society. 2015-01-05, vol. 108, p. 1-44
London Mathematical Society
Résumé en anglais
Let $Y$ be a scheme in which 2 is invertible and let $V$ be a rank $n$ vector bundle on $Y$ endowed with a non-degenerate symmetric bilinear form $q$. The orthogonal group ${\bf O}(q)$ of the form $q$ is a group scheme ...Lire la suite >