Français
We discuss some of the relations involving Gross and Leopoldt conjectures between the $l$-part of the universal kernel in the $K$-theory of number fields, the Kummer radical of the compositum of $\mathbb {Z}_l$-extensions, and the kernel of the principal $l$-adic absolute values, given by the $l$-adic field theory.
L'abonnement correspond aux 8 volumes annuels : 7 volumes d'Astérisque et le volume des exposés Bourbaki de l'année universitaire écoulée.
This subscription corresponds to 8 volumes: 7 volumes of Astérisque plus one volume with the texts of the Bourbaki talks given in the past year.