I am a PhD candidate at the Utrecht Geometry Centre under the supervision Dr. Álvaro del Pino Gomez. My work focusses on the h-principle and in particular convex integration as a method to prove h-principles.
My interests lie more generally within the field of geometric/differential topology. The line between geometric topology, differential topology and differential geometry is blurry and the different fields have an important interplay, but at its simplest I am interested in the interplay between the geometric structure on a manifold and the underlying topology of the manifold (or other spaces associated to the geometric structure). To name a few examples in this spirit:
- The de Rham isomorphism theorem
- Morse functions
- Myers' theorem: Riemannian manifolds with positive Ricci curvature are compact
- Smale-Hirsch immersion theorem & Smale's sphere eversion
See the contact section for information on how to get in touch.
Education
- 2021 – 2024: MSc in Mathematics, Radboud University Nijmegen.
- 2018 – 2021: BSc in Mathematics, Radboud University Nijmegen.
- 2018 – 2021: BSc in Physics, Radboud University Nijmegen.
Publications
- D.H. and Florian Zeiser, "Poisson cohomology of 3D Lie algebras". In: Journal of Geometry and Physics 191 (2023). arXiv:2122.04122.
Teaching
- TA for Introduction to Topology (Winter 2024, Utrecht University).
- TA for Calculus B (Spring 2024, Radboud University Nijmegen).
- TA for Group theory (Spring 2024, Radboud University Nijmegen).
- TA for Poisson Geometry (Fall 2023, Radboud University Nijmegen).
- TA for Functional Analysis (Fall 2021, Radboud University Nijmegen).
Ancillary activities
- I am one of the organizers of the Friday Fish seminar at the Utrecht Geometry Centre. Check out the webpage of the seminar to see what we are up to.
Contact
You can reach me at d.hoekstra [at] uu.nl
Room 8.04
Budapestlaan 6
3584 CD Utrecht
The Netherlands