Automorphisms of Drinfeld half-spaces over a finite field
Algebraic Geometry
2019-02-20 v3
Abstract
We show that the automorphism group of Drinfeld's half-space over a finite field is the projective linear group of the underlying vector space. The proof of this result uses analytic geometry in the sense of Berkovich over the finite field equipped with the trivial valuation. We also take into account extensions of the base field.
Keywords
Cite
@article{arxiv.1206.1008,
title = {Automorphisms of Drinfeld half-spaces over a finite field},
author = {Bertrand RÉMY and Amaury Thuillier and Annette Werner},
journal= {arXiv preprint arXiv:1206.1008},
year = {2019}
}
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15 pages