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Contractible Lie groups over local fields

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Abstract

Let G be a Lie group over a local field of characteristic p > 0 which admits a contractive automorphism α : G → G (i.e., αn(x) → 1 as n → ∞, for each x ∈ G). We show that G is a torsion group of finite exponent and nilpotent. We also obtain results concerning the interplay between contractive automorphisms of Lie groups over local fields, contractive automorphisms of their Lie algebras, and positive gradations thereon. Some of the results extend to Lie groups over arbitrary complete ultrametric fields.

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Authors and Affiliations

  1. Universität Paderborn, Institut für Mathematik, Warburger Str. 100, 33098, Paderborn, Germany

    Helge Glöckner

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  1. Helge Glöckner
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Correspondence to Helge Glöckner.

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Supported by the German Research Foundation (DFG), grants GL 357/2-1 and GL 357/6-1.

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Glöckner, H. Contractible Lie groups over local fields. Math. Z. 260, 889–904 (2008). https://doi.org/10.1007/s00209-008-0305-x

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