Rosa Winter - Research Associate

King's College London
Strand Campus, Office S5.43
Strand, London, WC2R 2LS
rosa.winter (at)
I am a research associate in the Number Theory Group of King's College London, working with Rachel Newton.

From 2020 until 2021 I was a postdoctoral researcher in the Nonlinear Algebra group at MPI-MiS in Leipzig. Before this I was a PhD student under the supervision of Martin Bright and Ronald van Luijk at Universiteit Leiden. In my thesis I worked on the density of rational points and the configurations of lines on del Pezzo surfaces of degree one, and their relation to torsion points on elliptic fibrations.

Upcoming talks


  • 6. Recovery from Power Sums (with B. Sturmfels and H. Melánová). Experimental Mathematics (2022). journal.
  • 5. Density of rational points on a family of del Pezzo surfaces of degree one (with J. Desjardins). Advances in Mathematics, Vol 405 (2022). journal, magma code.
  • 4. Linear Spaces of Symmetric Matrices with Non-Maximal Maximum Likelihood Degree (with Y. Jiang and K. Kohn). Le Matematiche, Vol 76 No 2 (2021), pp. 461-481. journal.
  • 3. Fields of definition of elliptic fibrations on covers of certain extremal rational ellipic surfaces (with V. Cantoral-Farfán, A. Garbagnati, C. Salgado, and A. Trbović). Women in Numbers Europe III: Research Directions in Number Theory. Springer, Association for Women in Mathematics Series, Vol 24 (2021), pp. 171-205. book, arXiv.
  • 2. Concurrent exceptional curves on del Pezzo surfaces of degree one (with R. van Luijk). To appear in Mathematics of Computation. arXiv (2019), with magma code 1 and magma code 2.
  • 1. The action of the Weyl group on the E8 root system (with R. van Luijk). Graphs and Combinatorics, Vol 37 No 6 (2021), pp. 1965-2064. journal, arXiv, magma code.
  • PhD thesis: Geometry and arithmetic of del Pezzo surfaces of degree 1 (2021).
  • Master thesis: Concurrent exceptional curves on del Pezzo surfaces of degree one (2014).
  • Bachelor thesis: Elliptic curves over Qp (2011).


Seminars I organized