Loïs Faisant

I am maître de conférences (~ tenured assistant/associate professor), member of the AGA team, at Laboratoire Paul Painlevé, Université de Lille, France, since September 2026.

Before that,

• I was a postdoc researcher at KU Leuven, Algebra Section, mentored by Raf Cluckers;
• I was an IST-BRIDGE & Marie Skłodowska-Curie fellow in Tim Browning’s group, ISTA;
• I completed my PhD in Summer 2023, under the supervision of Emmanuel Peyre at Institut Fourier, Université Grenoble Alpes.

mathematical interests

I work in arithmetic geometry. I am interested in a certain number of topics:

• algebraic geometry: Cox rings and applications (distribution of rational points on varieties, moduli spaces of curves, …); G-bundles over a curve;
• analytic number theory: circle method, harmonic analysis, zeta functions, especially the developpement of their motivic versions and their applications to geometry and arithmetics;
• logic: model theory for motivic integration and applications to arithmetics.

See the “Research” page for a list of works.

contact

my-first-name dot my-last-name at univ-lille.fr

You can write to me in English, French, Italian, Spanish (in no particular order !)

how to pronounce my first name

In my native language (French), my first name is gender neutral. Its pronouciation is close to that of Louis in English but is different: in ˈluːɪs you have to replace uː by əʊ (like the final o in tomato) to get ˈləʊɪs (and pronounce the final s if you did not). My pronouns in English are he/him/his/they/them/their.

news

• Motion du CNU 25 sur le mouvement de lutte du 20 octobre 2026 (section “Actualités”)

• Première Journée GRAAL (Géométrie-Représentations-Algèbre Amiens-Lille) à Lille, 15 octobre 2026 (co-organisée avec Lucien Hennecart, Daniel Juteau, Ronan Terpereau).
• Workshop : Counting results in geometric Galois theory at RIMS Kyoto, June 9-11, 2027.

---

Picture by Joël Charles-Rebufé.