Seminars Sorted by Series

Moonshine Seminar

Motivic Cohomology

Feb
06
2007

Motivic Cohomology

An Approach to the Conservation of the Nearby Motive Functor
2:00pm|S-101

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_...

Feb
13
2007

Motivic Cohomology

The Syntomic Regulator for K_1 of Surfaces
2:00pm|S-101

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...

Feb
22
2007

Motivic Cohomology

Arithmetic Cohomology and Special Values of Zeta-Functions (after Geisser)
11:00am|S-101

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...

Mar
01
2007

Motivic Cohomology

Bass' NK Groups and cdh-Fibrant Hochschild Homology
11:00am|S-101

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...

Mar
08
2007

Motivic Cohomology

Operations with Integer Coefficients (After Voevodsky)
11:00am|S-101

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...

Mar
15
2007

Motivic Cohomology

Cycles on Complete Intersections
12:00pm|S-101

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

Apr
12
2007

Motivic Cohomology

Overconvergent Homotopy Invariant Presheaves with Transfers over Smooth Rigid Varieties
11:00am|S-101

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...

Apr
19
2007

Motivic Cohomology

Completion of the Proof of the Bloch-Kato Conjecture
Chuck Weibel
11:00am|S-101

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 with Z/l-Coefficients

Motivic Eilenberg-Maclane Spaces Seminar

Neuroscience Day

May
13
2003

Neuroscience Day

Analysis of a biologically inspired model of visual cortex
Mike Shelley
9:30am|Dilworth Room