Marguerite's Theorem

Marguerite's Theorem (Le Théorème de Marguerite) is 2023 French-Swiss drama film co-written and directed by Anna Novion. It is about a female mathematics student at ENS whose career is upended when an error is discovered in her work. It premiered on 22 May 2023 at the 76th Cannes Film Festival. It was distributed in France on 1 November 2023.

Synopsis
Marguerite is a young and brilliant mathematician, the only girl in her class at the ENS, entirely devoted to her passion. The day an error is discovered in her thesis, she is devastated. In a dizzy spell, she leaves the school, wipes out the past. She then dives into the real world, discovers autonomy, befriends the young Léa, and makes love for the first time. Grown by her experiences, it is in this new momentum that she will find a correct proof of her theorem.

Production
To show mathematics realistically on the screen, Anna Novion worked with French mathematician Ariane Mézard. who provided all the equations written by the characters in the film, so that they are all authentic. Moreover, Mézard even made real progress on Goldbach's conjecture, the goal of Marguerite's work, for the film.

Cast

 * Ella Rumpf as Marguerite Hoffmann
 * Jean-Pierre Darroussin as Laurent Werner, her thesis director
 * Clotilde Courau as Suzanne
 * Julien Frison as Lucas Savelli
 * Sonia Bonny as Noa
 * Cheng Xiaoxing (credited Maurice Cheng) as Mr. Kong
 * Idir Azougli as Yanis
 * Camille de Sablet as the trainer
 * Édouard Sulpice as a student
 * Yun-Ping He as a mahjong opponent
 * Karl Ruben Noel as the dancer
 * Ava Baya as the dancer's girlfriend
 * Gauthier Boxebeld asthe manager
 * Leila Muse as the journalist
 * Esdras Registe as the colleague
 * Dominique Ratonnat as the professor
 * Capucine Chappey as Lucas's English-speaking friend

Release
Marguerite's Theorem was selected to be screened in the Special Screenings section at the 76th Cannes Film Festival, where it had its world premiere on 22 May 2023.

Marguerite's Theorem was theatrically released in France by Pyramide on 1 November 2023.