I am a PhD student in the arithmetic geometry research group at the Mathematical Institute of Leiden University and in the arithmetic geometry research group at the Mathematical Institute of FU Berlin, supervised by Bas Edixhoven and Hélène Esnault. My stay in Berlin was supported by the Berlin Mathematical School and the IRTG Moduli and Automorphic Forms.

I obtained my master's degree at Leiden University in November 2013 with a thesis on descent of curves.

See also my CV.

Snellius, room 242

Niels Bohrweg 1

2333 CA Leiden

+31 71 527 7142

w.zomervrucht@gmail.com

*Ineffective descent of genus one curves*. Preprint, arXiv, 2015.*Descent of curves*. Master's thesis, supervised by Lenny Taelman and Bas Edixhoven, 2013.*Op weg naar IMO 2011*(Dutch). Euclides 86-3, pp. 111–112, 2010.*De complexiteit van Buchbergers algoritme*(Dutch). Bachelor's thesis, supervised by Ronald van Luijk and Jeannette de Graaf, 2010.*De onvolledigheidsstelling van Gödel*(Dutch). LPC seminar, 2009.

- Algebra 1, spring 2018.
- Linear Algebra 1, fall 2017.
- Algebra 1, spring 2017.
- Introduction to Manifolds, fall 2014.
- Linear Algebra 2 (physics), fall 2014.
- Topology, spring 2014.
- Introduction to Statistics, fall 2013.
- Projective Geometry, spring 2013.
- Linear Algebra 1 (physics), fall 2012.
- Algebra 1, spring 2012.
- Algebra 2, fall 2011.
- Algebra 1, spring 2011.
- Linear Algebra 1, fall 2010.
- Projective Geometry, spring 2010.
- Linear Algebra 1, fall 2009.

- Shimura Varieties, crash course, Leiden, June 20–22, 2016.
*D*-Modules, seminar, FU Berlin, summer 2016.- Coherent Cohomology, seminar, Leiden, spring 2014.

- Fundamental groups, crash course, FU Berlin, September 28–30, 2015.
*Wiskunde in muziek*, pre-university project by Bart van Ginkel and Willem Nijsse, fall 2010.

- Algebra, Geometry and Number Theory seminar, Leiden, recurring.
- General Mathematics colloquium, Leiden, recurring.
- Intercity seminar, recurring.

- Tropical Geometry, Leiden, spring 2018.
*Moduli spaces and cone complexes*(notes). March 28 and April 11, 2018.

- Néron Models, Leiden, fall 2017.
- Diamant symposium, Breukelen, November 30–December 1, 2017.
- Summer school Berlin-Holland, Texel, August 28–September 1, 2017.
- Higgs Bundles, K3 Surfaces and Moduli, Berlin, July 10–12, 2017.
- Algebra, Geometry and Number Theory seminar, Leiden.
*The anabelian geometry of stable curves*. June 12, 2017.

- Diamant symposium, Breukelen, June 1–2, 2017.
- Brauer–Manin Obstructions, Leiden, spring 2017.
*The Hasse principle for plane cubics*(notes). April 19, 2017.

- Logarithmic Geometry, Leiden, spring 2017.
- Berkovich Spaces, FU Berlin, winter 2016.
*Berkovich analytification*(notes). November 10, 2016.

- Crystalline Cohomology, FU Berlin, winter 2016.
*The cohomology of a crystal*. December 12, 2016.

- Rationality, HU Berlin, winter 2016.
*The Artin–Mumford invariant*. November 16, 2016.

- IRTG Student Conference, Leiden, September 3, 2016.
- Current Trends in Algebraic and Arithmetic Geometry, Vlieland, August 29–September 2, 2016.
- Shimura Varieties, Leiden, June 20–22, 2016.
- GAeL XXIV, Şirince, June 13–17, 2016.
*Bhargava's cube law and cohomology*. June 17, 2016.

- Arakelov Theory and Automorphic Forms, Berlin, June 6–9, 2016.
- Diamant symposium, Veenendaal, May 26–27, 2016.
*Bhargava's cube law and cohomology*(slides). May 27, 2016.

- Day of Algebraic and Arithmetic Geometry, Berlin, May 20, 2016.
- Motivic Galois Groups and Periods, FU Berlin, summer 2016.
*Bousfield localization and local homotopy theory*. May 12, 2016.

*D*-Modules, FU Berlin, summer 2016.- Berkovich Spaces, HU Berlin, summer 2016.
*Effective Chabauty*. July 13, 2016.

- Motivic Homotopy Theory, Berlin, March 7, 2016.
- BMS Student Conference, Berlin, February 17–19, 2016.
- Moduli Spaces and Arithmetic Geometry, Leiden, November 9–13, 2015.
- Supersingular K3 Surfaces, FU Berlin, winter 2015.
*The Rudakov–Shafarevich vanishing theorem*. November 19, 2015.

- Topological Hochschild Homology, FU Berlin, winter 2015.
*Spectra*. November 17, 2015.

- Intersection Theory, FU Berlin, winter 2015.
*Chern classes*. January 11, 2016.

- Literature seminar, HU Berlin, winter 2015.
- Fundamental Groups, FU Berlin, September 28–30, 2015.
*Fundamental groups*(3 talks, notes).

- Perfectoid Spaces, Bressanone, August 31–September 4, 2015.
- Recent Advances in Algebraic and Arithmetic Geometry, Siena, August 24–28, 2015.
- Arithmetic Geometry seminar, HU Berlin.
*Bhargava's cube law and cohomology*. May 26, 2015.

- Rational Sections and Serre's Conjecture, FU Berlin, summer 2015.
*Free sections*. May 7, 2015.

- Étale Cohomology, FU Berlin, summer 2015.
*The étale local ring*. April 27, 2015.*Higher direct images*. June 22, 2015.

- Bridgeland Stability Conditions, FU Berlin, summer 2015.
- Faltings' Theorem, HU Berlin, summer 2015.
*The Tate conjecture*(notes). June 3, 2015.

- Day of Arithmetic and Algebraic Geometry, Berlin, March 12, 2015.
- Local Langlands microsymposium, Nijmegen, January 27, 2015.
- Diamant symposium, Soest, November 27–28, 2014.
- Étale Cohomology, Leiden, fall 2014.
- K3 Surfaces, Leiden, fall 2014.
*The Torelli theorem*(notes). November 5, 2014.

- Topics in Characteristic
*p*> 0 and*p*-Adic Geometry, Łukęcin, September 8–12, 2014. - Recent Developments in Algebraic and Arithmetic Geometry, Budapest, August 25–29, 2014.
*Descent of genus 1 curves*. August 28, 2014.

- Counting Arithmetic Objects, Montréal, June 23–July 4, 2014.
- Conference on Arithmetic Algebraic Geometry, Bonn, June 10–13, 2014.
- Diamant symposium, Arnhem, June 5–6, 2014.
- Belgian-Dutch Algebraic Geometry Day, Leuven, May 16, 2014.
- Coherent Cohomology, Leiden, spring 2014.
- BMS Days and BMS Student Conference, Berlin, February 17–21, 2014.
- Intercity seminar.
*Descent of genus 1 curves*. Leiden, February 14, 2014.

- Étale Fundamental Group, Leiden, fall 2013.
*Faithfully flat descent*(notes). November 6, 2013.

- Conference on Algebraic Geometry, Amsterdam, July 8–12, 2013.
- Topics in Algebraic Geometry, Leiden, spring 2013.
*Base change of schemes*. February 18, 2013.*Sites*. April 15, 2013.

- Modular Forms, Leiden, spring 2013.
*Modular functions and modular forms*. April 25, 2013.

- Local Fields, Leiden, spring 2011.
*Witt vectors*. February 28, 2011.*The Artin representation*. April 28, 2011.

- Intercity seminar.
*The complexity of Buchberger's algorithm*. Eindhoven, September 17, 2010.

- Bachelor seminar, Leiden, spring 2010.
*Buchbergers algoritme*. March 3, 2010.*Een Ackermanngrens voor Buchbergers algoritme*. April 21, 2010.

- LPC seminar, Leiden, spring 2009.
*De onvolledigheidsstelling van Gödel*. March 5, 2009.