Application of the notion of ϕ-object to the study of p-class groups and p-ramified torsion groups of abelian extensions
Résumé
We revisit the statements of the ``Main Conjecture = Main Theorem'', for real abelian fields in the non semi-simple case (p divides [K : Q]); for this, we use an ``arithmetic'' definition of the p-adic isotopic components, different from the ``algebraic'' one, used in the literature, which is not pertinent in that case. The two notions coincide for relative class groups of imaginary cyclic fields and, of course, in the semi-simple case. Numerical evidence are given. It would remain to write a proof using the classical tools (as Euler Systems) in this non semi-simple context .
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