One Hundred Twenty-One Days by Michèle Audin

This debut novel by mathematician and Oulipo member Michèle Audin retraces the lives of French mathematicians through World Wars I and II across multiple generations. The story shifts stylistically from chapter to chapter, resembling a book, fable, historical study, or a journal at points, locking and unlocking codes and concluding in a thrilling, unique reading experience. Michèle Audin is the author of various mathematical theories and history books, as well as a book about her anti-colonialist father's torture, disappearance, and death by the French during the Battle of Algiers.

The format alters dramatically over the book's pages, from diary entries to tales to research notes, all of which come together. And it has a few morsels and jewels concealed in its code for people who are interested in arithmetic.

Translated by Christiana Hills

Link to read: https://www.goodreads.com/book/show/26196054