13 citations · 44 across the 8 of their papers we have counts for
9 papers
Is the affine space determined by its automorphism group?
Hanspeter Kraft, Andriy Regeta, Immanuel van Santen né Stampfli
In this note we study the problem of characterizing the complex affine space via its automorphism group. We prove the following. Let be an irreducible quasi-proj…
Algebraic embeddings of into
Immanuel Stampfli
We prove that any two algebraic embeddings of into are the same up to an algebraic automorphism of , provided th…
On Maximal Subalgebras
Stefan Maubach, Immanuel Stampfli
Let be an algebraically closed field. We classify all maximal -subalgebras of any one-dimensional finitely generated -domain. In dimension two,…
Holomorphically Equivalent Algebraic Embeddings
Peter Feller, Immanuel Stampfli
We prove that two algebraic embeddings of a smooth variety in are the same up to a holomorphic coordinate change, provided that is smaller than or…
Automorphisms of Commuting with a -Action
Immanuel Stampfli
Let be an algebraic action of the additive group on the three-dimensional affine space . We describe the group of polynomial aut…
Automorphisms of the plane preserving a curve
Jérémy Blanc, Immanuel Stampfli
We study the group of automorphisms of the affine plane preserving some given curve, over any field. The group is proven to be algebraic, except in the case where the curve is a bu…