Sarah Wajsbrot

Intro

I am a PhD student in computer science at Université de Lorraine, under the supervision of Xavier Goaoc. I belong to the GAMBLE team, from the LORIA laboratory and the Inria research center.

I work in the field of computational geometry, with some incursions in operation research, including robust optimization, from the point of view of computational complexity. In particular, I'm interested in:

• uncertain or continuous variants of classical problems such as hitting set and set cover,
• incidence geometry (eg between lines in 3D),
• combinatorial convexity and its application to optimization.

Publications in conferences

1. J. Cardinal, X. Goaoc, S. Wajsbrot. Hitting and Covering Affine Families of Convex Polyhedra, with Applications to Robust Optimization, MFCS 2025, Warsaw, Poland. Full Version.
2. J. Cardinal, X. Goaoc, S. Wajsbrot. Hitting affinely parameterized families of polyhedra with applications to robust optimization, EuroCG 2025, Liblice, Czech Republic. Booklet of abstracts [60:1-60:7].
3. X. Goaoc, S. Wajsbrot. Some new cases of tractability for finite adaptability, ROADEF 2025, ENPC, Champs-sur-Marne, France. Booklet of abstracts [Paper n°150].

Talks

• Workshop Optimization at the second level, CIRM, Luminy, France, 2026. On invitation.
• CALIN Seminar, LIPN, Université Paris-Nord, Villetaneuse, France, 2026.
• Workshop Uncertainty in combinatorial and computational geometry, Banff, Canada, 2026. On invitation.
• Robust Optimization Webinar, online, 2025.
• MFCS 2025, Warsaw, Poland.
• Workshop Uncertainty in combinatorial and computational geometry, CG Week, Kanazawa, Japan, 2025.
• EuroCG 2025, Liblice, Czech Republic.
• ROADEF 2025, Champs-sur-Marne, France.
• PhD Seminar, LORIA, Nancy, France, 2025.
• Geometry & Computing 2024, an event organized by the GDR IFM and IG-RV, CIRM, Luminy, France.
• LORIA Department D1 day, Nancy, France, 2024.
• GAMBLE day, Nancy, France, 2024.

Teaching

• 2025/2026
  • Object-Oriented Programming (JAVA), First year of IA2R Engineering Degree, Polytech Nancy. Lectures and Tutorials with Vincent Despré.
  • Programming and Data Structures (Python), First year of Engineering Degree, Mines Nancy. Tutorials with Pierre-Etienne Moreau and Guillaume Bonfante.
• 2024/2025
  • Object-Oriented Programming (JAVA), First year of IA2R Engineering Degree, Polytech Nancy. Tutorials with Vincent Despré.
  • Network Programming (JAVA), First year of IA2R Engineering Degree, Polytech Nancy. Lectures and Tutorials with Vincent Despré.
• 2023/2024 - Object-Oriented Programming (JAVA), First year of Professional Bachelor in Computer Sciences, IUT Nancy-Charlemagne. Tutorials with Vincent Thomas.
• 2021/2022 - Mathematics high school teacher at Lycée Marseilleveyre, Marseille.

Education

• 2022/2023 - Master of Mathematics and Application - Optimization track, Université Paris-Saclay. Research internship under the supervision of Xavier Goaoc (GAMBLE team at Inria, LORIA): Counting bicolor line incidences in 3D, motivated by a question of consistency for 2-slits cameras.
• 2019/2020 - Master of Mathematics and Applications - Preparation to 'Agrégation', Sorbonne Université, Paris. Obtained the Agrégation de Mathématiques.

Misc.