English

Annihilating wild kernels

Number Theory 2022-03-25 v2 K-Theory and Homology

Abstract

Let L/KL/K be a finite Galois extension of number fields with Galois group GG. Let pp be an odd prime and r>1r>1 be an integer. Assuming a conjecture of Schneider, we formulate a conjecture that relates special values of equivariant Artin LL-series at s=rs=r to the compact support cohomology of the \'etale pp-adic sheaf Zp(r)\mathbb Z_p(r). We show that our conjecture is essentially equivalent to the pp-part of the equivariant Tamagawa number conjecture for the pair (h0(Spec(L))(r),Z[G])(h^0(\mathrm{Spec}(L))(r), \mathbb Z[G]). We derive from this explicit constraints on the Galois module structure of Banaszak's pp-adic wild kernels.

Keywords

Cite

@article{arxiv.1703.09088,
  title  = {Annihilating wild kernels},
  author = {Andreas Nickel},
  journal= {arXiv preprint arXiv:1703.09088},
  year   = {2022}
}

Comments

31 pages; v2 Example 7.5 and subsection 7.7 are new, some additional minor revisions