Tautological characteristic classes I

Abstract

We discuss the formalism of tautological characteristic classes of flat bundles. Applied to $PSL(2,K)$ it yields the Witt class of Nekovar. Applied to $PG{L}_{+}(2n,K)$, the general linear groups with positive determinant over an arbitrary ordered field, it yields (a generalization of) the Euler class.

33 pages

References in corpus (1)

• Tetrahedra of flags, volume and homology of SL(3)