1998/01/19 by Hélène Esnault, Esnault, Hélène
Mathematics · #Algebraic Geometry and Number Theory #Homotopy and Cohomology in Algebraic Topology #math.AG
paper · pdf · doi:10.48550/arxiv.math/9801086
Latex 2e, 11 pages
arxiv created 1998/01/19 · arxiv updated 2009/11/30
This is a survey on the topic explained in the title, for the proceedings on the K-theory 1997 summer institute in Seattle.