Stieltjes Prize 2022-2023 for Lucas Slot

Former CWI PhD student Lucas Slot has been awarded the Stieltjes Prize for the best mathematical PhD thesis in the Netherlands. Slot did his PhD research at CWI, defended his thesis ‘cum laude’ at Tilburg University and is now a postdoc researcher at ETH Zürich.

Publication date
4 Apr 2024

Former CWI PhD student Lucas Slot has been awarded the Stieltjes Prize for the best mathematical PhD thesis in the Netherlands in the academic year 2022-2023. Slot did his PhD research in the Networks & Optimization group at CWI and defended his thesis at Tilburg University ‘cum laude’ in 2022. The jury for the Stieltjes Prize assessed in total 76 dissertations. On 3 April 2024, Slot received the prize at the Dutch Mathematical Congress (NMC 2024), where he gave a presentation about his research.

The jury said, among others, that Slot’s research "gives a strong improvement on the best known results in literature", and that his PhD thesis is based on 7 papers, "most of them already published in high ranked journals". The jury also noted that the thesis was written in only 3,5 years, concluding: "We see this as an excellent thesis which fully deserves the Stieltjesprijs".

Optimization

In his PhD research at CWI, Slot studied optimization theory: mathematics that can be used to optimize all kinds of processes, for instance in energy networks, logistics, transportation and finance. His PhD research focused specifically on applying semidefinite programming to polynomial optimization. This technique has its roots in the work of Hilbert on sums of squares, which feature in his famous list of 23 problems for the 20th century. In modern times, it is used to efficiently compute approximate solutions to hard real-world problems. In his PhD research at CWI, Slot analysed the robustness of these solutions by establishing trade-offs between accuracy and computational effort. He combined methods from several areas in fundamental and applied mathematics to obtain his results.

Lucas Slot during his Stieltjes Prize Lecture at NMC 2024. Picture: Marieke Kranenburg.
Lucas Slot during his Stieltjes Prize 2022-2023 Lecture at NMC 2024. Picture: Marieke Kranenburg.

About Lucas Slot

Slot did his PhD research in the Networks & Optimization group at CWI, under the supervision of Monique Laurent. Before this, he studied mathematics and computer science at the University of Amsterdam, and mathematics at the University of Bonn. He defended his PhD thesis 'Asymptotic Analysis of Semidefinite Bounds for Polynomial Optimization and Independent Sets in Geometric Hypergraphs' ‘cum laude’ at Tilburg University in September 2022. From November 2022, he has been a postdoc in the group of David Steurer at ETH Zürich. In 2022, Lucas Slot won the annual KWG prize for PhD students at the Dutch Mathematical Conference.

Lucas Slot (left) receiving the Stieltjes Prize 2022-2023 at NMC 2024, from Kees Vuik, chair of the Stieltjes Prize jury. Picture: Marieke Kranenburg.

About the Stieltjes Prize

Since 1996 the Stieltjes Prize is annually awarded for the best PhD thesis in mathematics that is defended at a Dutch university. The prize consists of 2,500 euros and is sponsored by the foundation Compositio Mathematica. Previous winners from CWI were Sophie Huiberts (2021-2022; CWI) and Freek Witteveen (2021-2022; UvA & QuSoft, hosted at CWI), Benjamin Sanderse (2013; CWI), Jop Briët (2011; CWI), and Marc van Raalte (2004; CWI).

This year’s jury consisted of Erik van den Ban (UU), Odo Diekmann (UU), Aernout van Enter (RUG), Frans Oort (UU), Marc Uetz (UT), Aad van der Vaart (TUD) and Kees Vuik (TUD, chair), with assistance from Marieke Kranenburg (UvA, jury secretary).

Photo: Lucas Slot (left) receiving the Stieltjes Prize 2022-2023 at NMC 2024, from Kees Vuik, chair of the Stieltjes Prize jury. Picture: Marieke Kranenburg.