Special Year 2004-05: The Bloch-Kato Conjecture

Motivic Cohomology

April 19, 2007 | 11:00am - 12:00pm

In the last eight lectures, we have reduced the proof of the Bloch-Kato to an assertion about motivic cohomology operations. We will prove that this assertion is correct, and so complete the proof of the Bloch-Kato conjecture.

Motivic Cohomology

April 12, 2007 | 11:00am - 12:00pm

Let F be a presheaf with transfers on the category of smooth affinoid varieties over a non-archemidean field. Suppose that F is overconvergent and homotopy invariant. Then the presheaves H^i(-,F) are also homotopy invariant (where the cohomology is...

Motivic Cohomology

March 15, 2007 | 12:00pm - 1:00pm

We will describe some bounds on the multidegrees of complete intersections to have trivial Chow groups in low dimensions.

Motivic Cohomology

March 08, 2007 | 11:00am - 12:00pm

We will classify all unstable motivic operations from bidegree (2n,n) (with coefficients Z) to bidegree (p,q) with coefficients Z/l, l>2. All such operations are polynomials on the elements of the Steenrod Algebra. This work is based upon some...

Motivic Cohomology

March 01, 2007 | 11:00am - 12:00pm

By definition, NK_0(R) is K_0(R[t]) modulo K_0(R). We give a formula for this group when R is of finite type over a field of characteristic zero. The group is bigraded and determined by its typical pieces, which are the cdh cohomology groups H^p(R...

Motivic Cohomology

February 22, 2007 | 11:00am - 12:00pm

Geisser gives conjectured formulas for special values of zeta-functions of varieties over finite fields in terms of Euler characteristics of arithmetic cohomology (an improved version of Weil-etale cohomology). He then proves these formulas under...

Motivic Cohomology

February 13, 2007 | 2:00pm - 3:00pm

We give an explicit formula for the syntomic regulator of certain elements in the first algebraic K-theory group of a smooth complete surface over the ring of integers of a p-adic field. The formula uses the theory of Coleman integration and the...

Motivic Cohomology

February 06, 2007 | 2:00pm - 3:00pm

We present a program to prove the following conjecture: Let $S$ be the spectrum of a DVR of equi-characteristic zero with field of fraction $K$ and residue field $k$. The functor (associated to the choice of a uniformizing) $\Psi:DM_{gm}(K) \to DM_...