Maarten Derickx
About meI'm Maarten Derickx. I'm currently a postdoc at the university of Zagreb. I received my Ph.D. at the universities of Leiden, Bordeaux and Milano as part of the joint Algant doctorate program.

Software Projects
Together with Barinder Banwait I wrote the programs isogenyprimes to study isogenies of elliptic curves over number fields and quadratictorsion for determining the posible torsion groups of elliptic curves over different quadratic number fields. Together with Solomon Vishkautsan I wrote a magma package called Chabauty that helps with doing explicit Chabauty computations. I keep all my personal reusable sage and magma functions in two separate packages called MDSage (documentation) and MDMagma.Publications
Most of my publications can be found on arXiv. The ones that are not are in the table below:
Title  Journal  Preprint 

Rational families of 17torsion points of elliptic curves over number fields (2018) with Barry Mazur and Sheldon Kamienny  Contemporary Mathematics  
Torsion points on elliptic curves over number fields of small degree, Ph.D. Thesis (Sep 2016)  Universiteit Leiden Theses  PDF 
Torsion points on elliptic curves and gonalities of modular curves, Masters Thesis (Sep 2012)  Univertiteit Leiden Theses  PDF code 
Infinitesimally Rigid Construction of the Algebraic Numbers, Bachelor Thesis (June 2010)  Univertiteit Leiden Theses 
The rest of my articles are on arXiv:
Talks & Slides & Notes
This section is currently very outdated.
Date  Subject  Where  Notes/Slides 

05062014  The rational group structure of modular Jacobians.  LMFDB Workshop, Warwick  Slides (pdf) 
30102013  Finding all points of degree < gonality on Y_{1}(N).  Harvard Number Theory Seminar  Slides (pdf) 
18092013  Computing modular units and gonalities of modular curves.  Elliptic Curve Cryptography Workshop 2013  Slides (pdf) 
23072013  Computing modular Galois representations  the modulo p approach (after Jinxiang Zeng)  Sage Days 51: Algorithms in Arithmetic Geometry, Lorentz Centre Leiden  Slides (pdf) 
01032013  Gonalities of modular curves.  Intercity Seminar "Gonalteiten dag", Utrecht  Slides (pdf) 
28092012  Torsion points on Elliptic curves.  Intercity Number Theory Seminar, Leiden  Slides (pdf) 
25092012  Gonalities of modular curves.  Masters defense. Universiteit Leiden  Slides (pdf) 
The representability of Γ_{1}(N), an explicit construction of Y_{1}(N). 
Algebraic Geometry Seminar (Leiden)  Notes (pdf) 