Mathematics – Algebraic Geometry
Scientific paper
2002-03-15
Mathematics
Algebraic Geometry
21 pages, in French, minor changes; to appear in Journal of Number Theory
Scientific paper
We give criteria for R-equivalence of torsors under finite constant group
schemes over a field. In paticular, using bitorsors, we obtain a Galois
devissage result which formalises and generalises a theorem of Philippe Gille
in the case of local fields; for instance, Gille's theorem is shown to extend
to higher local fields.
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