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On non-abelian Stark-type conjectures

Andreas Nickel (2011)

Annales de l’institut Fourier

We introduce non-abelian generalizations of Brumer’s conjecture, the Brumer-Stark conjecture and the strong Brumer-Stark property attached to a Galois CM-extension of number fields. Moreover, we discuss how they are related to the equivariant Tamagawa number conjecture, the strong Stark conjecture and a non-abelian generalization of Rubin’s conjecture due to D. Burns.

On Tate’s refinement for a conjecture of Gross and its generalization

Noboru Aoki (2004)

Journal de Théorie des Nombres de Bordeaux

We study Tate’s refinement for a conjecture of Gross on the values of abelian L -function at s = 0 and formulate its generalization to arbitrary cyclic extensions. We prove that our generalized conjecture is true in the case of number fields. This in particular implies that Tate’s refinement is true for any number field.

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