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Systèmes d’Euler p -adiques et théorie d’Iwasawa

Bernadette Perrin-Riou (1998)

Annales de l'institut Fourier

On définit la notion de système d’Euler associé à une représentation p -adique V du groupe de Galois absolu de dans le cas cyclotomique. Cette notion a été introduite par Kolyvagin. L’existence d’un tel système a des conséquences très importantes sur l’étude des groupes de Selmer de V que nous développons ici.

The period-index problem in WC-groups IV: a local transition theorem

Pete L. Clark (2010)

Journal de Théorie des Nombres de Bordeaux

Let K be a complete discretely valued field with perfect residue field k . Assuming upper bounds on the relation between period and index for WC-groups over k , we deduce corresponding upper bounds on the relation between period and index for WC-groups over K . Up to a constant depending only on the dimension of the torsor, we recover theorems of Lichtenbaum and Milne in a “duality free” context. Our techniques include the use of LLR models of torsors under abelian varieties with good reduction and...

Universal transitivity of simple and 2-simple prehomogeneous vector spaces

T. Kimura, S. Kasai, H. Hosokawa (1988)

Annales de l'institut Fourier

We denote by k a field of characteristic zero satisfying H 1 ( k , Aut ( S L 2 ) ) 0 . Let G be a connected k -split linear algebraic group acting on X = Aff n rationally by ρ with a Zariski-dense G -orbit Y . A prehomogeneous vector space ( G , ρ ,X) is called “universally transitive” if the set of k -rational points Y ( k ) is a single ρ ( G ) ...

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