|Topology of Algebraic Varieties|
|Topic:||Proper base change for zero cycles|
|Affiliation:||University of Regensburg; Member, School of Mathematics|
|Date:||Tuesday, February 17|
|Time/Room:||2:00pm - 3:00pm/S-101|
We study the restriction map to the closed fiber for the Chow group of zero-cycles over a complete discrete valuation ring. It turns out that, for proper families of varieties and for certain finite coefficients, the restriction map is an isomorphism. One can also ask whether for other motivic cohomology groups with finite coefficients one gets a restriction isomorphism.