 
Mathematical Institute
Leiden University
Einsteinweg 55
2333 CC Leiden
 
The Netherlands
| Phone | +31-71-5272727 | 
|---|---|
| e.l.brakkee@math.leidenuniv.nl | |
| Office | Gorlaeus building, Room BW2.30 | 
I am a postdoc at Leiden University, funded by an NWO VENI grant. My research area is Algebraic Geometry.
Before this, I was a postdoc at the University of Amsterdam with Mingmin Shen.
I did my PhD at the University of Bonn with Daniel Huybrechts.
I did my BSc and MSc Mathematics at the University of Amsterdam.
K3 surfaces, moduli spaces, Hodge theory, Brauer groups, derived categories, cubic fourfolds, hyperkähler varieties
 
Moduli of lattice-polarized K3 surfaces and boundedness of Brauer groups
    With Danny Bragg and Tony Várilly-Alvarado
    Preprint (55 pages)
    arXiv: 2510.11477
Irreducible symplectic varieties via relative Prym varieties
    With Chiara Camere, Annalisa Grossi, Laura Pertusi, Giulia Saccà and Sasha Viktorova
    Preprint (41 pages)
    arXiv: 2404.03157
Kodaira dimension of moduli spaces of hyperkähler varieties
    With Ignacio Barros, Pietro Beri and Laure Flapan
    Preprint (50 pages), to be published in Algebraic Geometry
    arXiv: 2212.12586
    Marked and labelled Gushel-Mukai fourfolds
    With Laura Pertusi
    In Rationality of Algebraic Varieties. Progress in Mathematics, vol. 342, 129–-146. Birkhäuser, 2021.
    DOI: https://doi.org/10.1007/978-3-030-75421-1_6
    arXiv:2002.04248
	 
	Moduli spaces of twisted K3 surfaces and cubic fourfolds
Math. Ann. 377(3):1453--1479, 2020.
DOI: https://doi.org/10.1007/s00208-020-01990-x (open access)
arXiv:1910.03465
	Two polarised K3 surfaces associated to the same cubic fourfold
	Math. Proc. Cambridge Philos. Soc., 171(1):51–-64, 2021.
	DOI: https://doi.org/10.1017/S0305004120000055 (open access)
arXiv:1808.01179
Ninth Japanese-European Symposium on Symplectic Varieties and Moduli Spaces, 1 - 5 September 2025
Lorentz workshop K3 surfaces & friends: Brauer groups and moduli, 30 June - 4 July 2025. Open questions
Hodge theory in Leiden, a conference in honour of Chris Peters' 75th birthday, 5 - 6 September 2024
Intercity Geometry Seminar 2024, website
Junior Belgian-Dutch Algebraic Geometry Seminar (Autumn 2021 - Spring 2023), website
Intercity Geometry Seminar 2020, website
2025: Jorge Macein, master's thesis, Leiden University (with Yagna Dutta).
2023-2024: Harry Evangelatos, master's thesis, Leiden University. 
Title: On the Genus of Moduli Spaces of Rank 19 Lattice Polarized K3 Surfaces with a Level Structure
2021: Erik Barinaga, master's thesis, UvA. 
Title: Monodromy of hyperelliptic curves