Automorphisms of Drinfeld half-spaces over a finite field

作者：Remy Bertrand^*; Thuillier Amaury; Werner Annette

来源：Compositio Mathematica, 2013, 149(7): 1211-1224.

DOI：10.1112/S0010437X12000905

• non-Archimedean analytic geometry
• Berkovich spaces
• Drinfeld upper half-space
• birational transformations

We show that the automorphism group of Drinfeld%26apos;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.

• 出版日期2013-7