On the Hermitian K-theory of Grassmannians

Abstract

We compute the $\mathbb{G}W$-spectrum (Karoubi--Grothendieck--Witt spectrum) of Grassmannians over divisorial schemes defined over fields of characteristic zero, and, as a corollary, determine their stabilized $\mathbb{L}$-theory spectrum. As part of our computation, we establish split fibration sequences in $\mathbb{K}$-theory, $\mathbb{G}W$-theory and $\mathbb{L}$-theory.

30 pages, with an appendix by Marco Schlichting. Results generalized. Expositions improved according to referee's comments. Comments are very welcome!