A generalization of Sen-Brinon's theory

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Let K be a complete discrete valuation field of mixed characteristic and k be its residue field of prime characteristic p > 0. We assume that [k: kp] = ph < ∞. Let GK be the absolute Galois group of K and R be a Banach algebra over Cp:=K̄̂ with a continuous action of GK. When k is perfect (i.e. h = 0), Sen studied the Galois cohomology H1(GK, R*) and Sen's operator associated to each class (Sen Ann Math 127:647-661, 1988). In this paper we generalize Sen's theory to the case h ≥ 0 by using Brinon's theory (Brinon Math Ann 327:793-813, 2003). We also give another formulation of Brinon's theorem (à la Colmez).

Original languageEnglish
Pages (from-to)327-346
Number of pages20
Journalmanuscripta mathematica
Issue number3-4
Publication statusPublished - 2010
Externally publishedYes

ASJC Scopus subject areas

  • Mathematics(all)


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