%0 Journal Article
%T On the kernel of the norm in some unramified number fields extensions
%A Emmanuel Hallouin
%A Marc Perret
%J Mathematics
%D 2007
%I arXiv
%X We determine the -1 Tate cohomology group of the units for principal abelian extensions of type (p^a, p^b) of a number field.
%U http://arxiv.org/abs/0706.0417v1