Flexible bundles over rigid affine surfaces
Résumé
We construct a smooth rational affine surface S with finite automorphism group but with the property that the group of automorphisms of the cylinder SxA^2 acts infinitely transitively on the complement of a closed subset of codimension at least two. Such a surface S is in particular rigid but not stably rigid with respect to the Makar-Limanov invariant.
Domaines
| Origine | Fichiers produits par l'(les) auteur(s) |
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