Conference "Zeta Functions"June 21 - 25, 2010Moscow, Russia |
Organisers: Michel Balazard (CNRS, Laboratoire Poncelet), Michael Tsfasman (CNRS, Laboratoire Poncelet, Institute for Information Transmission Problems), Alexey Zykin (Laboratoire Poncelet, State University Higher School of Economics)
Friday 25 June, 18:00 - 19:00
Let K/k be an abelian extension of number fields with Galois group G. Let O_K be the ring of integers of K. The study the Z[G]-structure of the K- groups Km(O_K) naturally begins with the computation of their annihilators. Following Iwasawa’s theory, such computations for K-groups can be recasted in terms of special values of zeta functions. Snaith recently gave a generalization of this result in the case when G is no more trivial. Using special values of L-functions, he built an ideal J_K=k(m), and proposed a conjecture (for p odd). In the same paper, he proved the conjecture when m is not zero and K is a cyclotomic field. In this talk, we will explain how Iwasawa’s theory can be used to prove these results.