This page contains an overview of recent teaching and supervision activities.
Postdocs
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Jonathan Love Leiden, 2024 - current
Postdoc on ERC Grant "GAGARIN".
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Elie Studnia Leiden, 2024 - current
Postdoc on ERC Grant "GAGARIN".
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David Lilienfeldt Leiden 2023 - current
Edixhoven postdoc at the Mathematical Institute.
PhD students
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Felix Kalker Leiden, 2025 - current
Thesis expected 2029. Funded by ERC Grant "GAGARIN".
Co-supervisor: Emre Sertöz
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Mateo Crabit Nicolau Paris / Leiden, 2024 - current
Thesis expected 2028. Partly funded by ERC Grant "GAGARIN".
Co-supervisor: Pierre Charollois
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Paolo Bordignon Leiden, 2023 - current
Thesis expected 2027.
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Antigona Pajaziti Luxemburg / Leiden, 2023 - current
Thesis expected 2026. Partly funded by ERC Grant "GAGARIN".
Co-supervisor: Antonella Perucca
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Alex Braat Leiden, 2022 - current
Thesis expected 2024. Partly funded by ERC Grant "GAGARIN".
Co-supervisor: Peter Stevenhagen
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Håvard Damm-Johnsen Oxford, 2020 - 2024
Thesis: Diagonal restrictions of Hilbert modular forms (Co-supervisor: James Newton)
Håvard started a postdoc in Gothenburg with Christian Johansson.
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Mike Daas Leiden, 2020 - 2024
Thesis: CM values of p-adic theta functions
Mike started a postdoc at MPIM Bonn with Don Zagier.
Master students
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Jorre The (co-supervisor: Paolo Bordignon) Leiden, current
Gauss composition and fppf cohomology
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Shenqi Fan (main supervisor: Lennart Meier) Utrecht, current
Equivariant elliptic genera
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Felix Kalker Leiden, current
Topological RM values of rational cocycles
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Bart van Kootwijk Leiden, current
Rank heuristics for Diophantus' family of elliptic curves
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Emre Karayalçın Leiden, current
Torsion in homology of Bianchi groups and Galois representations
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Maarten Stremler Leiden, 2024
Smooth differences of singular moduli
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Mateo Crabit Nicolau Paris, 2024
Holomorphic projections and Shimura curves
Mateo started a PhD in Mathematics at Paris Sorbonne / Leiden.
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Michelle Jacobs Leiden, 2024
Jacobi uniformisation over the p-adic numbers
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David van der Vorm Leiden, 2024
Torsion points of order 11, 12, and 13 on elliptic curves
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Niels Ketelaars Leiden, 2023
An effective version of Iwasawa's theorem
Niels became a consultant at RiskQuest (Amsterdam).
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Sam van Buuren Leiden, 2022
Spectra of supersingular isogeny graphs
Sam started a PhD in Mathematics at KULeuven (Belgium).
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Giacomo Santato (ALGANT) Leiden, 2021
Zeroes of p-adic L-functions: the Ellenberg-Jain-Venkatesh conjecture
Giacomo started a PhD in Cryptography at CISPA (Saarbrücken).
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Giuditta Bellosi (ALGANT) Leiden, 2021
From Pell's equation to Gross-Stark units
Giuditta became a Business Intelligence Analyst at Sysdata SpA (Bologna).
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Emiel Haakma Leiden, 2021
Heegner points and the Shimura correspondence
Emiel started a PhD in Mathematics at SFU (Vancouver).
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Jesse Freeman (Williams-Exeter Programme) Oxford, 2014
L-functions and modular symbols
Jesse started a PhD in Mathematics at MIT (Boston).
Undergraduate students
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Rik van der Linde Leiden, current
Congruentieklassen van Apolloniaanse netten
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Thomas Chen Leiden, 2021
The Leech lattice: Sphere packings and the Conway groups
Thomas started a PhD in Biostatistics in Cambridge (UK).
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Kevin Watmough (NSERC) McGill, 2017
p-Adic torsors and statistics of the Hilbert symbol
Kevin started a PhD in Mathematics at Toronto (Canada).
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David Marcil (NSERC) McGill, 2017
Elkies' models for towers of modular curves
David started a PhD in Mathematics at Columbia (New York).
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Isaac Loh (Williams-Exeter Programme)Oxford, 2014
Pell-type equations and Mordell equations
Isaac started a PhD in Economics at Northwestern (Chicago).
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Christopher Huffaker (Williams-Exeter Programme) Oxford, 2014
Fermat's last theorem for regular primes
Christopher became a data reporter covering education in Boston.
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Jesse Freeman (Williams-Exeter Programme)Oxford, 2013
Class field theory of ℚ
Jesse started a PhD in Mathematics at MIT (Boston).
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CJ Higgins (Williams-Exeter Programme)Oxford, 2012
The friendship theorem and extensions
CJ started a PhD in Political Science at Johns Hopkins (Baltimore).
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Zane Martin (Williams-Exeter Programme)Oxford, 2012
Dirichlet's theorem on primes in arithmetic progressions
Zane started a PhD in Applied Math & Atmospheric Science at Columbia (New York).
Pre-university
- I supervised two Sixth Form students at Magdalen College School (Oxford), as part of the Waynflete Studies Programme.
- Tom Daggitt:
Maths using origami
- Stephen Jones:
The properties of perfect numbers
Stephen won the Best Essay Prize of the Waynflete Studies Programme.
Teaching
Webpages with relevant material for some past and present courses.
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Bachelorseminarium
Leiden, 2025
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Algebraic Number Theory
Utrecht, 2024
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Bachelorseminarium
Leiden, 2024
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Algebraic Number Theory
Utrecht, 2023
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Bachelorseminarium
Leiden, 2023
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Topics in Algebraic Number Theory
Leiden, 2023
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Algebraic Number Theory
Amsterdam, 2022
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Bachelorseminarium
Leiden, 2022
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Topics in Algebraic Number Theory
Leiden, 2022
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Algebraic Number Theory
Amsterdam, 2021
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Topics in Algebraic Number Theory
Leiden, 2021
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Algebraic Number Theory
Amsterdam, 2020
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Math 251 : Honours Linear Algebra
Montreal, 2017
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Math 596 : Topics in Algebra and Number Theory
Montreal, 2017
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Math 235 : Algebra I
Montreal, 2016
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Math 140 : Calculus I
Montreal, 2016