Research
Automorphism group of flag varieties with non-reduced stabilizer
Preprint at arXiv:2507.04549.
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
J. London Math. Society 111 (2025), DOI:10.1112/jlms.70069
Preprint at arXiv:2312.00415.
Projective homogeneous varieties of Picard rank one in small characteristic
Ann. Scuola Normale Superiore di Pisa, Classe di Scienze 72 (2024), DOI: 10.2422/2036-2145.202307_013
Preprint at arXiv:2303.12391.
Unipotent algebraic groups over arbitrary fields
Master Thesis, under the supervision of Cinzia Casagrande and Matthieu Romagny
Upcoming talks
- Workshop Group Schemes Actions in Low Dimension, May 2025 (Lille)
- Complex Geometry Seminar, June 2025 (Nancy)
- Séminaire de Topologie et Géométrie Algébrique, September 2025 (Angers)
Past talks
- Workshop Algebraic Groups, April 2025 (Oberwolfach)
- Joint Seminar on Complex Algebraic Geometry and Complex Analysis, April 2025 (Wuppertal)
- Séminaire Géométrie Algébrique, Géométrie Analytique, Théorie de Lie, April 2025 (Poitiers)
- Séminaire de Géométrie, March 2025 (Bordeaux)
- Seminari di Algebra e Geometria Algebrica, March 2025 (Torino)
- Séminaire Algébre et Géométries, March 2025 (Grenoble)
- Séminaire d'Arithméthique, March 2025 (ENS Lyon)
- Colloque Tournant du RT algèbre, March 2025 (Clermont-Ferrand)
- Séminaire Géométrie Algébrique, February 2025 (Lille)
- Séminaire Géométrie, Algèbre, Dynamique et Topologie, February 2025 (Dijon)
- Seminar Algebraic Geometry, January 2025 (MPIM, Bonn)
- Séminaire Géométrie et Topologie, December 2024 (LMBA, Brest)
- Algebraic Geometry and Complex Geometry, November 2024 (CIRM, Luminy)
- Oberseminar Algebraic Lie Theory, October 2024 (Bochum)
- Workshop Algebraic groups in a broad sense, October 2024 (Stockholm)
- Hodge Theory and Moduli of K3s (minicourse), Summer School on Real Algebraic Geometry and Hodge Theory, September 2024 (Dresden)
- Séminaire Arithmétique et Géométrie Algébrique, April 2024 (IRMA, Strasbourg)
- Séminaire Géométrie Algébrique, April 2024 (Lille)
- Algebra and Geometry PhD student seminar, March 2024 (IRMAR, Rennes)
- Séminaire Algèbre et Géométries, March 2024 (Institut Fourier, Grenoble)
- 13th Swiss-French Workshop in Algebraic Geometry, January 2024 (Charmey)
- Oberseminar Algebraic Geometry, January 2024 (Düsseldorf)
- Séminaire Compréhensible, January 2024 (Grenoble)
- Basel-Dijon-Lausanne Joint Seminars, November 2023 (Basel)
- Number Theory Seminar, November 2023 (Bordeaux)
- RéGA Seminar, IHP, October 2023 (Paris)
- AGATA Seminar, September 2023 (Montpellier)
- TLAG Days, August 2023 (Rennes)
- Representation Theory in Lyon, June 2023
- Complex Geometry Seminar, June 2023 (Nancy)
- Arithmetic Geometry Seminar, May 2023 (Rennes)
- Schubert seminar, November 2022 (online)
- Algebra and Geometry PhD student seminar, September 2022 (Rennes)
- PhD Student Seminar, May 2022 (Lyon)
Some links
- CARE Conference in Lyon, November 2025
- Welcome Home Seminars (UniTo), December 2023
- Projets Filles, Maths et Informatique
- Tribune sur La mobilité heureuse
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