3 papers
math.AG2026
Automorphism groups of Mori Del Pezzo fibrations over an irrational curve
Pascal Fong, Susanna Zimmermann
We study the automorphism groups of Mori Del Pezzo fibrations over a smooth projective curve of positive genus. From that, we obtain a classification of maximal connected algeb…
math.AG2025
Explicit Sarkisov program for regular surfaces over arbitrary fields and applications
Fabio Bernasconi, Andrea Fanelli, Julia Schneider +1
We prove the Sarkisov program for projective surfaces over excellent base rings, including the case of non-perfect base fields of characteristic . We classify the Sarkisov…
math.AG2024
Maximal subgroups in the Cremona group
Andrea Fanelli, Enrica Floris, Susanna Zimmermann
We show that for any there exist connected algebraic subgroups in the Cremona group that are not contained in any maximal connected algebraic…