I am a PhD student under supervision of Ben Moonen. My main interest lies in algebraic geometry and algebraic number theory. I am funded by NWO project 613.001.207 (*Arithmetic and motivic aspects of the Kuga–Satake construction*).

Current research topics include: Hodge theory, reductive groups and their representations, `p`-adic Hodge theory, Galois representations, motives.

@: | `j.commelin` (funny symbol) `math.ru.nl` |
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P: | +31 (0)24 365 2865 |

A: | HG 03.724 Huygens Gebouw Heyendaalseweg 135 6525 AJ Nijmegen |

Seminar | Semester |
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Local Langlands Microsymposium (with Milan Lopuhaä) | 27 January 2015 |

Local Langlands Seminar (with Milan Lopuhaä) | Autumn 2014 |

PhD Colloquium (with Rutger Kuyper) | Spring 2014 – now |

Basic Notions Reading Group | Autumn 2013 |

As teaching assistant in Nijmegen:

Course | Semester |
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Abelian Varieties | Autumn 2014 |

Rings and Fields | Spring 2014 |

As teaching assistant in Leiden:

Course | Semester |
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Algebra 1 | Spring 2013 |

Algebra 3 | Spring 2013 |

Seminar on Commutative Algebra | Spring 2012 |

Algebra 1 | Spring 2012 |

Projective Geometry | Spring 2012 |

Analysis 3 (physics) | Autumn 2011 |

- 11 Dec 2014
- Local Langlands seminar — Weil–Deligne representations. Notes
- 13 Nov 2014
- Local Langlands seminar — Functional equation for GL
_{2}and cuspidal local constants. Notes - 23 Oct 2014
- Abelian Varieties — Finite group schemes. Notes
- 3 Mar 2014
- PhD colloquium (RU) — What is a motive? Notes
- 3 Dec 2013
- Seminar on Étale Cohomology — Étale cohomology of fields. Notes
- 16 Jul 2013
- Master's thesis defense — Algebraic cycles, Chow motives, and
`L`-functions - 18 Mar 2013
- Topics in Algebraic Geometry — Good reduction. Notes
- 11 Feb 2013
- Topics in Algebraic Geometry — Projective and noetherian schemes.
- 26 Apr 2012
- Commutative Algebra seminar — Derivations and Differentials. Notes
- 26 Mar 2012
- Topics in Algebraic Geometry — The structure of
`[N]`II. Notes - 19 Mar 2012
- Topics in Algebraic Geometry — The structure of
`[N]`I. Notes

I wrote my master's thesis, titled Algebraic cycles, Chow motives, and L-functions, in the spring of 2013 under the supervision of Robin de Jong.

I wrote my bachelor's thesis, titled Tannaka Duality for Finite Groups, in the spring of 2011 under the supervision of Lenny Taelman.