Sebastiaan Johan Edixhoven completed a master’s degree in pure mathematics cum laude at Utrecht University in 1985, beginning a career that spanned arithmetic geometry, modular curves, and the computational accessibility of Galois representations.
Academic Foundations and Early Career
Born in Leiden on 12 March 1962, Edixhoven graduated from Erasmus College in Zoetermeer in 1980. His advanced studies took place at Utrecht University, where he earned a PhD in 1989 under the supervision of Frans Oort, focusing his thesis on modular curves. Immediately following his doctorate, he served as a Morrey assistant professor at the University of California, Berkeley, from 1989 until 1991.
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After returning to Utrecht University, he transitioned to the University of Rennes 1, where he served as a professor from 1992 to 2002. In 2002, he moved to Leiden University to assume a professorship in geometry. In 2004, working alongside Peter Stevenhagen, he founded the Algebra, Geometry and Number Theory (ALGANT) program. This collaborative master's and PhD initiative linked institutions across France, Italy, Germany, the Netherlands, and Canada.
Editorial Contributions and External Research
Edixhoven held multiple editorial roles, co-managing Compositio Mathematica between 2003 and 2012 and serving as an editor for journals including the Journal of Number Theory, Expositiones Mathematicae, and Indagationes Mathematicae. Beyond traditional academia, he contributed to technical projects for Canon Inc. and the French Ministry of Defense, focusing on correction codes. He was also active in the Bèta-lerarenkamer think tank, supporting the development of a mobile application designed to assist refugee teachers with their Dutch and mathematics proficiency.
Mathematical Research Focus
His primary research interests evolved from early work on modular curves to the computational challenges of modular forms and Galois representations. His publications included contributions to the André–Oort conjecture and investigations into geometric interpretations of the quadratic Chabauty method. His scholarly recognition included membership in the Institut Universitaire de France from 1995 to 2002 and election to the Royal Netherlands Academy of Arts and Sciences in 2009.
Fast facts
- Born: 12 March 1962, Leiden, Netherlands
- Died: 16 January 2022
- Education: Utrecht University
- Key Academic Roles: Leiden University, University of Rennes 1, UC Berkeley
- Field of Study: Arithmetic geometry and number theory
- Professional Membership: Royal Netherlands Academy of Arts and Sciences
- Awards: Huygens scholarship (1989–1992)
Questions readers ask
What was the focus of Bas Edixhoven's later research?
His later work concentrated on the geometric interpretation of the quadratic Chabauty method.
Which international academic program did Edixhoven help establish?
He co-founded the ALGANT program in 2004, which facilitated cooperation between universities in several European countries and Canada.
Achievements
- Held posts at Leiden University, University of California, Berkeley and University of Rennes 1
- Fields: algebraic geometry, number theory and mathematics
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