Matilde Maccan
Matilde Maccan
picture

I am currently a postdoc in the group of Christian Lehn, at Ruhr University Bochum, since June 2024. Before, I was a PhD student in IRMAR (University of Rennes) and Institut Fourier (University of Grenoble Alpes), under the supervision of Michel Brion and Matthieu Romagny.

My research is mainly on algebraic group schemes over fields of positive characteristic.
Related subjects I am interested in are birational geometry and representation theory of reductive groups.

My first projects were about classifying non-reduced parabolic subgroups in small characteristics and on the study of isotrivial elliptic surfaces in positive characteristic. I am now working on studying the geometry of flag varieties with non reduced stabilizer.
Here is my CV, updated in May 2025.

Research


Maximal automorphism groups of surfaces
Document here, joint work with Pascal Fong, to appear in ZAG Seminar Proceedings.
Isotrivial elliptic surfaces in positive characteristics
Preprint at arXiv:2405.11602, joint work with Pascal Fong, to appear in Documenta Mathematica.
Parabolic subgroup schemes and homogeneous varieties in small characteristics
PhD thesis.
Parabolic subgroups in characteristics two and three
Preprint at arXiv:2312.00415, to appear in the Journal of the London Mathematical Society.
Projective homogeneous varieties of Picard rank one in small characteristic
Preprint at arXiv:2303.12391, to appear in Annali della Scuola Normale Superiore di Pisa, Classe di Scienze. DOI: 10.2422/2036-2145.202307_013
Unipotent algebraic groups over arbitrary fields
Master Thesis, under the supervision of Cinzia Casagrande and Matthieu Romagny.
Upcoming talks

Past talks
More...
Some links

Teaching


2025 : Teaching Assistant, Analysis II SoSe25
Ruhr University Bochum (moodle page)


2024-2025 : Teaching Assistant, Analysis I WS24/25
Ruhr University Bochum (moodle page)


2023-2024 : Cours-TD MAT101 (Langage mathématique, algèbre et géométrie élémentaires)
L1 IMA, Université de Grenoble Alpes (poly du cours)


2021-2023 : TD Algèbre et Géométrie 1
L1 Mathématiques, Université de Rennes (page du cours)


Contact


Email: matilde.maccan [at] ruhr-uni-bochum.de


Address: Fakultät für Mathematik
Building IB, office 1/143
Ruhr University Bochum
Universitätsstrasse 150
44801 Bochum, Germany