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math.AG2026
Solvable Automorphism Groups of Varieties
Serge Cantat, Hanspeter Kraft, Andriy Regeta +1
Let be a variety of dimension , and let be its automorphism group. When is quasi-affine, we prove that a solvable subgroup of that is…
math.AG2026
On Ramanujam's Theorem About Finite Dimensional Groups of Automorphisms
Serge Cantat, Hanspeter Kraft, Andriy Regeta +1
Ramanujam's theorem states that any connected finite-dimensional subgroup of the automorphism group of an irreducible variety is an algebraic group, in a natu…
math.AG2026
Symmetric subrank and its border analogue
Benjamin Biaggi, Jan Draisma, Koen de Nooij +1
The symmetric subrank of homogeneous polynomial is the largest number of terms in a diagonal form to which it can be specialized by a (typically non-invertible) linear variable sub…