Geodesic
Geometric methods for cohomological invariants
Documenta mathematica, Tome 12 (2007), pp. 521-545.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: We explain how to exploit Rost's theory of Chow groups with coefficients to carry some computations of cohomological invariants. In particular, we use the idea of the «stratification method» introduced by Vezzosi. We recover a number of known results, with very different proofs. We obtain some new information on spin groups.
Keywords: cohomological invariants, algebraic cycles 
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     author = {Guillot, Pierre},
     title = {Geometric methods for cohomological invariants},
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     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_2007__12__a5/}
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Guillot, Pierre. Geometric methods for cohomological invariants. Documenta mathematica, Tome 12 (2007), pp. 521-545. http://geodesic.mathdoc.fr/item/DOCMA_2007__12__a5/