Research group

Postdocs

Soumya Sankar (started September 2023)

PhD students

• Anouk Eggink (started September 2024)
  Daily supervisor
• Hsin-Yi Yang (started September 2023)
  Daily supervisor
• Leonie Scherer (started July 2023)
  Second supervisor (Daily supervisor: Jakob Stix)

For other members of the Rational Points consortium, please consult the consortium website.

Former PhD students

• Mar Curcó Iranzo (graduated April 2025)
  Daily supervisor
• Dusan Dragutinovic (graduated June 2025)
  Co-promotor (Promotor: Carel Faber)

From left to right: Soumya Sankar, Leonie Scherer, Hsin-Yi Yang, Mar Curcó Iranzo, Dusan Dragutinovic, myself.

Master's students

• René Bruin (co-supervision with Marta Pieropan, started September 2024)
• Mashal Mehr (graduated June 2024)
  Thesis title: Arbitrarily large torsion in Tate-Shafarevich groups
• Mees Jager (graduated July 2023)
  Thesis title: The inverse Galois problem with prescribed ramification
• Anne Wouda (graduated June 2022)
  Thesis title: Supersingular isogeny graphs and orientations in cryptography
• Joost Mein (graduated June 2022)
  Thesis title: Entanglement of Galois representations on elliptic curves over Q
• Evie Roebroek (graduated April 2021)
  Thesis title: Using class field theory to find function fields with many rational places

Bachelor's students

• Maurits Beelen (graduated June 2025)
  Thesis title: Fq-primitive points on elliptic curves over finite prime fields
• Jonna van Liempt (co-supervision with Rogier Bos and Dirk Schuricht, graduated January 2025)
  Thesis title: Teaching a rigorous mathematical background for L2-Hilbert spaces in quantum mechanics
• Tom Sinke (graduated June 2024)
  Thesis title: Het vermoeden van Malle en kransproducten van symmetrische groepen
  (Malle's conjecture and wreath products of symmetric groups)
• Javier San Martín (graduated June 2024)
  Thesis title: Arboreal representations and a Markov model for factorisation of PCF polynomials
• Ludo van Wieringen (co-supervision with Dirk Schuricht, graduated June 2023)
  Thesis title: Spin and the representation theory of rotations
• Marlies Hoeksema (graduated June 2022)
  Thesis title: Permutation rational functions over finite fields
• Wijnand van Essen (graduated June 2022)
  Thesis title: Gauss factorials of polynomials over finite fields
• Ruben Vink (co-supervision with Marieke van der Wegen, graduated June 2021)
  Thesis title: Chip-firing games on graphs
• Emilin van Ruiten (graduated January 2021)
  Thesis title: A cryptosystem based on algebraic surfaces
• Fabienne Waanders (graduated January 2021)
  Thesis title: Het gebruik van elliptische krommen bij het zetten van een digitale handtekening
  (Using elliptic curves for digital signatures)
• Niels van Ee (co-supervision with Damaris Schindler, graduated June 2020)
  Thesis title: Upper bounds for progression-free sets
• Emi Weel (co-supervision with Damaris Schindler, graduated June 2020)
  Thesis title: Bounds on Diophantine tuples with polynomials