Original title (FR): Le Théorème de Marguerite

The future of Marguerite, a brilliant student in Mathematics at the prestigious Ecole Normale Supérieure, seems all planned out. The only woman from her year, Marguerite is finishing a thesis she has to present to an audience of researchers. On the big day, a mistake shakes all her certainties and all her foundations collapse.

https://www.themoviedb.org/movie/960033-le-theoreme-de-marguerite