Table of Contents

Cohomological invariants, Witt invariants, and trace forms: Contents by J.-P. Serre and S. Garibaldi Introduction by J.-P. Serre and S. Garibaldi The notion of "invariant" by J.-P. Serre and S. Garibaldi Cohomological preliminaries: The local case by J.-P. Serre and S. Garibaldi Cohomological preliminaries: The function field case by J.-P. Serre and S. Garibaldi Specialization properties of cohomological invariants by J.-P. Serre and S. Garibaldi Restriction and corestriction of invariants by J.-P. Serre and S. Garibaldi Cohomological invariants of $O_n,SO_n,ldots$ by J.-P. Serre and S. Garibaldi Cohomological invariants of etale algebras by J.-P. Serre and S. Garibaldi Witt invariants by J.-P. Serre and S. Garibaldi The trace form in dimension $le 7$ by J.-P. Serre and S. Garibaldi A letter from M. Rost to J-P. Serre by M. Rost A letter from J-P. Serre to R. S. Garibaldi by J.-P. Serre A letter from B. Totaro to J-P. Serre by B. Totaro Rost invariants of simply connected algebraic groups: Contents by A. Merkurjev and S. Garibaldi Rost invariants of simply connected algebraic groups by A. Merkurjev and S. Garibaldi The groups $H^{d+1}(F,mathbb{Q}^mathbb{Z}(d))$ by A. Merkurjev and S. Garibaldi Tables of Dynkin indices by A. Merkurjev and S. Garibaldi Bibliography Index of notation Index of terms.